ThisItem.Attachment.Value is not a recognised identifier

[AndrewB011]

Hi All, 

I'm beating my head against a wall here and don't seem to have the right google fu to find anyone talking about this.

I'm using Powerapps and DataVerse for Teams to put together an expense reimbursement form

I have an Attachment field in my DataVerse Table and when I reference the column in the gallery:

I get two options

FileName and  Value

I suspect that I need to use Value to pull in the information and I'm using an image control for this purpose. The silly part is that when I select "Value" from the dropdown I don't get a compatibility error which might point me in the right direction; I get:

I would appreciate any insight people have. I would also be will to use a button to open the file externally but have no inkling how to do this either.

Cheers all,

[v-jefferni]

Hi @AndrewB011 ,

Since the code in the screenshot is not complete, I have no idea of what the error message really mean. But assuming that if you would like to use an Image control to display the image file which is stored in the Attachments column of a Dataverse table, then you could follow below method:

First(ThisItem.Attachments).Value

Hope this helps.

Best regards,

Community Support Team _ Jeffer Ni
If this post helps, then please consider Accept it as the solution to help the other members find it.

[AndrewB011]

Hi @v-jefferni ,

Thank you for the suggestion. I removed any other code in the element to make it as simple as possible. Unfortunately I have a different error appearing when using your suggestion.

Original Error:

New Error:

Same original error when used outside the gallery context:

 tested with both reference styles same error for both.

Cheers,

[v-jefferni]

Hi @AndrewB011 ,

What is the "Attachment" column? Did you create it manually in tables from Dataverse for Teams?

The "Attachments" column in my test is a system column from Dataverse:

While in Dataverse for Teams I didn't find neither the system Attachments column itself nor the way to show it in any tables (suspect if there it is). So I manually added two columns with File type and Image type. Then in a Gallery I have made both of the two columns display fine:

So, the point now is, we need to know more details about Attachment column and the screen along with controls it included.

Hope this helps and waiting for more information.

Best regards,

Community Support Team _ Jeffer Ni
If this post helps, then please consider Accept it as the solution to help the other members find it.

[AndrewB011]

Thank you @v-jefferni for your in-depth investigation thus far.

You're correct that this is a custom column.

These are the details of a new custom attachment column

I didn't change any defaults beyond the name and type

I hope this helps you further understand what my issue might be.

I would suspect that the File Data Type includes the Filename and Value options

I can access this in teams/Powerapps by clicking See More in the Recent Apps Panel then See all in the Items created for <Team> Panel, Finding and selecting the table I want to add the Attachment column to and choosing Add column.

Thank you again for your work on this.

[v-jefferni]

@AndrewB011 ,

Then your Attachment column is the same as my Attachment2 column.

Could you please tell me which property of which control you applied the formula? If it is an Image Control in each Gallery items, then the formula should be:

ThisItem.Attachment.Value

If the Image Control is out of the Gallery :

First('RC-Items').Attachment.Value

The File type column value is a record with columns of FileName and Value. You can see it worked fine in my previous post.

Please try remove the table from your App's data sources and re-add it then check if the formula could work. Or you could create a new Attachment2 File type column to test further.

Best regards,

Community Support Team _ Jeffer Ni
If this post helps, then please consider Accept it as the solution to help the other members find it.

[AndrewB011]

Hi @v-jefferni

The same error occurs if I use 'RC-Temps'.Attachment2.Value

Thanks,

[v-jefferni]

Hi @AndrewB011 ，

Is that Gallery contained in some Control?

Best regards,

Community Support Team _ Jeffer Ni
If this post helps, then please consider Accept it as the solution to help the other members find it.

[AndrewB011 · Accepted solution]

Hi @v-jefferni 

Again Thank you for your hard work on this. I wanted to return to say that I have discarded the original intent to keep this data in Dataverse with uploads to Sharepoint for files.

I am, for this app, keeping everything in SharePoint instead. I have now successfully set up my gallery and it launches a browser window to show the attachment.

For posterity, I did have the gallery in a responsive container but I'm unsure if this would have been the issue in the end. I've abandoned these as well as it was messing up the the column headings I was attempting to use.

See Re: ThisItem.Attachment.Value is not a recognised ... - Power Platform Community (microsoft.com) for the permalink to the last post from the CST in this thread - Jeffer Ni

[ErnstRH]

A bit late to the party, but I faced this exact issue when trying to Patch attachments through the 'attachment control' in a gallery.

The table I was patching had three columns:

- Name

- Value

- Attachment

The problem was actually caused by the column with Displayname 'Value' in the same table as the Attachment column. I've read elsewhere that it is recommended not to use any columns with Dataverse reserved names, such as Value.

The solution for me was to remove the column 'Value' and replace it with a column called 'TextValue' - simply renaming it is not sufficient.