cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Baltner
Resolver I
Resolver I

The value ': ' cannot be converted to a number.

Hello.  I am am getting the following error the first time I load one of the screen in my app:

The value ': ' cannot be converted to a number.

Now I understand that ': ' is not a number and that Power Apps has a right to complain about this, but my problem is finding out where in the many formulas of my app this is happening. I use that string many places in the app, for example in a label like 

"Assigned To: " & assignee.Text

so that character string is all over the place. I even tried searching the fx.yaml file for that screen (after unpacking the .msapp file) but there are over 600 occurrences of ": " in the file because that's how control properties are listed (e.g., "Height: =32") and I've inspected all of them. I searched for strings like "Value(" and ".Value" and all sorts of other obvious signs that my formulas may be asking for a number, but so far have come up empty. It would be helpful if the error message provided more information about the location of the erro, like a normal stack trace, but that's not available in Power Apps. Is there a recommended way to try to solve this problem? Thanks!

1 ACCEPTED SOLUTION

Accepted Solutions
iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Have you tried using Power Apps' Monitor tool? That will tell you exactly which control or piece of code on a control/property was trying to convert that string to a value.

 

image.png

 

MonitorSession.gif

 

If I had to guess, I would say there's a Text Input or dropdown somewhere which is using Value(Self.Text) or Value(TextInputName.Text) or if its the dropdown then Value(DropdownName.Selected.PropertyName) - this happens quite often when people try to create dynamically filled Time series, as they use (hh & ":" & mm) type format, but before it contains a value it is just ":"

So if you have anywhere you are combining values with static strings like ":" between them, I'd search for that within the Power Apps IDE as should be easy to find ":" amongst your other code

 

Cheers,

Sancho


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


View solution in original post

4 REPLIES 4
Baltner
Resolver I
Resolver I

Update: I did manage to find the formula that triggers this error but I'm not successful in preventing it so far. It's in a gallery, and as the screen is loading (OnVisible) the app is calling a flow to get the data to create the collection for the gallery's items.  One of the properties displayed in the gallery uses this formula:

$"Priority: {Text(ThisItem.Value.priority) }"

 As a test, I changed this to: $"Priority: {10}" and the error did not occur so it seems like the app may be reacting to the fact that ThisItem.Value.priority is not defined yet and that the priority value is numeric (in the original JSON). I tried a couple of solutions like:

If(!IsEmpty(ThisItem),
    $"Priority: {Text(ThisItem.Value.priority)}",
    ""
    )

and

If(!IsEmpty(ThisItem.Value.priority),
    $"Priority: {Text(ThisItem.Value.priority)}",
    ""
    )

but this doesn't help.

 

Is there a way, maybe with a timer, to delay the loading of a gallery until the data that feeds it is ready?

iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Have you tried using Power Apps' Monitor tool? That will tell you exactly which control or piece of code on a control/property was trying to convert that string to a value.

 

image.png

 

MonitorSession.gif

 

If I had to guess, I would say there's a Text Input or dropdown somewhere which is using Value(Self.Text) or Value(TextInputName.Text) or if its the dropdown then Value(DropdownName.Selected.PropertyName) - this happens quite often when people try to create dynamically filled Time series, as they use (hh & ":" & mm) type format, but before it contains a value it is just ":"

So if you have anywhere you are combining values with static strings like ":" between them, I'd search for that within the Power Apps IDE as should be easy to find ":" amongst your other code

 

Cheers,

Sancho


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


Sancho:

 

That was great advice. I had only used the Monitor in Play Mode before and the error was not occurring there. Using the setting to enable it in the published app really gave me all the information I needed, so thanks!

 

For future reference, if anyone were to have a similar problem, what was happening was that I was trying to set the value of 'priority' on a slider control where the value in a referenced Gallery was "Priority: X", where X could be a alue between 0 and 10. My original error-causing formula was this (in order to strip off "Priority: ") :

 

Right(TaskListGallery_1.Selected.priority_1,2)

 

and I was using 2 to allow for the two digits in "10", and that's where the error was. I replaced this with:

 

Switch(Len(TaskListGallery_1.Selected.priority_1),
        10,"",
        11,Right(TaskListGallery_1.Selected.priority_1,1),
        12,Right(TaskListGallery_1.Selected.priority_1,2)
)

 

which now handles both 1-digit and 2-digit priority values.  Dooh! As usual, the solution is much easier if you know where to look, and that's where your advice was a huge help. Thanks!

 

iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Happy to help, glad it got you to where you needed!


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


Helpful resources

Announcements

Celebrating the May Super User of the Month: Laurens Martens

  @LaurensM  is an exceptional contributor to the Power Platform Community. Super Users like Laurens inspire others through their example, encouragement, and active participation. We are excited to celebrated Laurens as our Super User of the Month for May 2024.   Consistent Engagement:  He consistently engages with the community by answering forum questions, sharing insights, and providing solutions. Laurens dedication helps other users find answers and overcome challenges.   Community Expertise: As a Super User, Laurens plays a crucial role in maintaining a knowledge sharing environment. Always ensuring a positive experience for everyone.   Leadership: He shares valuable insights on community growth, engagement, and future trends. Their contributions help shape the Power Platform Community.   Congratulations, Laurens Martens, for your outstanding work! Keep inspiring others and making a difference in the community!   Keep up the fantastic work!        

Check out the Copilot Studio Cookbook today!

We are excited to announce our new Copilot Cookbook Gallery in the Copilot Studio Community. We can't wait for you to share your expertise and your experience!    Join us for an amazing opportunity where you'll be one of the first to contribute to the Copilot Cookbook—your ultimate guide to mastering Microsoft Copilot. Whether you're seeking inspiration or grappling with a challenge while crafting apps, you probably already know that Copilot Cookbook is your reliable assistant, offering a wealth of tips and tricks at your fingertips--and we want you to add your expertise. What can you "cook" up?   Click this link to get started: https://aka.ms/CS_Copilot_Cookbook_Gallery   Don't miss out on this exclusive opportunity to be one of the first in the Community to share your app creation journey with Copilot. We'll be announcing a Cookbook Challenge very soon and want to make sure you one of the first "cooks" in the kitchen.   Don't miss your moment--start submitting in the Copilot Cookbook Gallery today!     Thank you,  Engagement Team

Announcing Power Apps Copilot Cookbook Gallery

We are excited to share that the all-new Copilot Cookbook Gallery for Power Apps is now available in the Power Apps Community, full of tips and tricks on how to best use Microsoft Copilot as you develop and create in Power Apps. The new Copilot Cookbook is your go-to resource when you need inspiration--or when you're stuck--and aren't sure how to best partner with Copilot while creating apps.   Whether you're looking for the best prompts or just want to know about responsible AI use, visit Copilot Cookbook for regular updates you can rely on--while also serving up some of your greatest tips and tricks for the Community. Check Out the new Copilot Cookbook for Power Apps today: Copilot Cookbook - Power Platform Community.  We can't wait to see what you "cook" up!      

Tuesday Tip | How to Report Spam in Our Community

It's time for another TUESDAY TIPS, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.   As our community family expands each week, we revisit our essential tools, tips, and tricks to ensure you’re well-versed in the community’s pulse. Keep an eye on the News & Announcements for your weekly Tuesday Tips—you never know what you may learn!   Today's Tip: How to Report Spam in Our Community We strive to maintain a professional and helpful community, and part of that effort involves keeping our platform free of spam. If you encounter a post that you believe is spam, please follow these steps to report it: Locate the Post: Find the post in question within the community.Kebab Menu: Click on the "Kebab" menu | 3 Dots, on the top right of the post.Report Inappropriate Content: Select "Report Inappropriate Content" from the menu.Submit Report: Fill out any necessary details on the form and submit your report.   Our community team will review the report and take appropriate action to ensure our community remains a valuable resource for everyone.   Thank you for helping us keep the community clean and useful!

Community Roundup: A Look Back at Our Last 10 Tuesday Tips

As we continue to grow and learn together, it's important to reflect on the valuable insights we've shared. For today's #TuesdayTip, we're excited to take a moment to look back at the last 10 tips we've shared in case you missed any or want to revisit them. Thanks for your incredible support for this series--we're so glad it was able to help so many of you navigate your community experience!   Getting Started in the Community An overview of everything you need to know about navigating the community on one page!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Ranks and YOU Have you ever wondered how your fellow community members ascend the ranks within our community? We explain everything about ranks and how to achieve points so you can climb up in the rankings! Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Powering Up Your Community Profile Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile. Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Blogs--A Great Place to Start There's so much you'll discover in the Community Blogs, and we hope you'll check them out today!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Unlocking Community Achievements and Earning Badges Across the Communities, you'll see badges on users profile that recognize and reward their engagement and contributions. Check out some details on Community badges--and find out more in the detailed link at the end of the article! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Blogging in the Community Interested in blogging? Everything you need to know on writing blogs in our four communities! Get started blogging across the Power Platform communities today! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Subscriptions & Notifications We don't want you to miss a thing in the community! Read all about how to subscribe to sections of our forums and how to setup your notifications! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Getting Started with Private Messages & Macros Do you want to enhance your communication in the Community and streamline your interactions? One of the best ways to do this is to ensure you are using Private Messaging--and the ever-handy macros that are available to you as a Community member! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Community User Groups Learn everything about being part of, starting, or leading a User Group in the Power Platform Community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Update Your Community Profile Today! Keep your community profile up to date which is essential for staying connected and engaged with the community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Thank you for being an integral part of our journey.   Here's to many more Tuesday Tips as we pave the way for a brighter, more connected future! As always, watch the News & Announcements for the next set of tips, coming soon!

Hear what's next for the Power Up Program

Hear from Principal Program Manager, Dimpi Gandhi, to discover the latest enhancements to the Microsoft #PowerUpProgram, including a new accelerated video-based curriculum crafted with the expertise of Microsoft MVPs, Rory Neary and Charlie Phipps-Bennett. If you’d like to hear what’s coming next, click the link below to sign up today! https://aka.ms/PowerUp  

Top Solution Authors
Top Kudoed Authors
Users online (2,892)