Using SET inside a FORALL Statement

[PJBruen]

Hi, 

I've seen various answers to this question, but I'm not able to work them out to suit my needs. I'm trying to create a Sharepoint folder structure from PowerApps. I'm calling a Power Automate flow to create the folder. The following code works fine:

ForAll(SharepointList1, ST_CreateFolder.Run(vYear, vTest, Title, "Dept1")); - so in this case, Title is derived from SharepointList1

What I would like to do however is loop through another Sharepoint list to derive the hard-coded value for "Dept1". What I was hoping was that I could do something like this.......but I now know this isn't possible.

ForAll(SharepointList2, Set(vDept, Title), ForAll(SharepointList1, ST_CreateFolder.Run(vYear, vTest, Title, vDept)));

Hopefully that makes sense. Is anyone able to guide me on this please?

Thanks, Paul

[PowerRanger]

@PJBruen 

As you already figured ut you can't use Set withn a ForAll. You could use Collect instead to wright the results into a Collection.

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[RandyHayes · Accepted solution]

@PowerRanger 

One thing to be aware of is that ForAll is not a traditional For Next loop as that would be more conducive to development...which PowerApps is not.

Also ForAll returns a table/collection.  So, it is quite easy to collect all the results of your Run results and then use that in another ForAll.

I'm not entirely clear on your intention with what you are trying to do, but some options are:

1) Lookup the value you want

   ForAll(SharepointList1, ST_CreateFolder.Run(vYear, vTest, Title, LookUp(SharePointList2, someCriteria, Title)))

2) Identify the Title as something else

   ForAll(SharepointList2 as list2, ForAll(SharepointList1, ST_CreateFolder.Run(vYear, vTest, Title, list2.Title)))

3) Combine the items in List2 into List1 and run against that

   ForAll(

        AddColumns(SharePointList1, "list2Items", Filter(SharePointList2, somecriteria)),  

            ForAll(list2Items, yourRunStatementHere)

   )

Some of the above may give you some guidance on where to go next.

I hope this is helpful for you.

[PJBruen]

Perfect - thanks.

Option 2 was the winner!

Regards,

Paul