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Anonymous
Not applicable

Get Max Value from Select data

Hi,

I'm setting up a flow that uses a new response from Forms as the trigger. I'm taking the Forms data and sending emails as well as adding it to a SharePoint list. These actions are all working fine.

 

There's another requirement of the Flow where I need to create the Project ID and have it increment with each new request. The Project-ID uses this pattern:
LOB-Subline-YYMM-##
Here's an example, B-EMC-1807-01

 

I've managed to collect the data and then piece it back together using substrings which I'm writing to the 'proj-id-compare' Compose statement and using it to compare with existing data. Here's an example:
B-EMC-1807-

Since this is ongoing I need to compare the new value with all of the existing values so the Flow will know how to create the next Project-ID.  Therefore, I write the Project-ID and Project ID# to their own SharePoint list.  Project-ID# is a number column so it can used for calculations in Flow. This list is only being used to keep up with the Project-IDs that have been used, so the Flow will "know" how to create the next Project-ID.

 

I think I've got most everything completed but I just can't figure out how to get the Max value within the returned Project-ID#s.

 

I've got a variable called itemExists that uses startswith to compare the 'proj-id-compare' substring with the used Project-IDs in the SharePoint 'IT-Project-IDs' list.

When itemExists comes back false then I've got a filterArray to show the Project-ID data.  I've then got a Select data operation that further filters the data so only Project-ID# and its value is shown.  In my Flow history I can see this data output from the Select data operation:

[
  {
    "Project-ID#": 1
  },
  {
    "Project-ID#": 2
  },
  {
    "Project-ID#": 3
  },
  {
    "Project-ID#": 4
  }
]

I've tried using the Max function but just don't understand the syntax as I've been unable to pinpoint this data.
I'd like to get the Max value from this dynamic data and then assign it to a variable so I can more easily increment it and also use it in other sections of the Flow.

From the above example data I'd like the Flow to be able to set the MaxProjectID# variable to 4

 

Any advice is appreciated!

This is also my first post here so if I'm doing something wrong, please let me know. 

Thanks!

Here's the full Flow:

 

MaxValue-part1MaxValue-part1MaxValue-part2MaxValue-part2MaxValue-part3MaxValue-part3MaxValue-part4MaxValue-part4MaxValue-part5MaxValue-part5MaxValue-part6MaxValue-part6

2 REPLIES 2
v-yamao-msft
Community Support
Community Support

Hi @Anonymous,

 

I have seen a blog on Calculate running totals and tracking maximum values in Flow, please check it at here:

https://flow.microsoft.com/en-us/blog/calculate-running-totals-and-tracking-maximum-values-in-flow/

 

You could use Initialize variable and Set variable to return the Max value from the items. Hope it could be a reference for you. 

 

 

Best regards,

Mabel Mao

Community Support Team _ Mabel Mao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Anonymous
Not applicable

Hi @v-yamao-msft,

 

Thanks for the help!  I'm trying to implement the Flow you mentioned so I can better understand it and how I can use portions of it in my Flow but unfortunately I'm having issues with that Flow.  I've tried to setup the SharePoint list and Flow steps as stated in the article you linked (calculate-totals-and..) but my version fails on the last step as I don't know what "item" is referencing as there are no SharePoint columns called "item", nor are there any dynamic fields simply called "item". Maybe Flow has been updated to show column names since then but I'm sorry that I just don't understand how to setup this example flow yet.

 

I'll keep working on taking elements from the example Flow you mentioned but I'm still confused as to why an "Apply to Each' condition is used to find a Maximum value when there are other functions such as Max and Last that could also be used.  Were they not available when this Flow-of-the-Week was setup?

 

Under what circumstances would you use Last or Max?

https://docs.microsoft.com/en-us/azure/logic-apps/workflow-definition-language-functions-reference#l...
https://docs.microsoft.com/en-us/azure/logic-apps/workflow-definition-language-functions-reference#m...

 

Thanks,

Scott

 

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