Update local variables in a loop

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Posted on by Random1232

Hello all,

Setup:

I have a set of 5 local variables say v1,v2,...,v5

I have another global variable varNum that can take value from 1 to 5.

What I want to do:

If varNum is 3, I want to set first 3 local variables v1,v2,v3 to true.

If varNum is 1, set v1 to true and so on.

Algorithm:

array = [v1,v2,v3,v4,v5]
For v in (1 to varNum):
 UpdateContext({array[v]:true})

I tried:

ForAll(
 FirstN([v1,v2,v3,v4,v5],varNum),
 UpdateContext({ThisRecord:true})
);

of course, Lord Microsoft does not allow to use UpdateContext under ForAll. Nor there is any loop function. If you can suggest something similar, that would be great.

Categories:

Building Power Apps

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LaurensM 12,516 Moderator on at

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Hi @Random1232,

Setting a variable in a loop is currently not possible. As an alternative solution you could adjust the true / false logic.

Instead of having 5 variables that are either true / false, set 1 variable to the respective number. In your example this would be varNum. In the scenario where varNum would be 3 -> v1, v2 & v3 would return true. Replace those variable references with a condition that returns true/false depending on the value of varNum:

//Instead of v1 use: varNum >= 1 //Instead of v2 use: varNum >= 2 //and so on...

If this solves your question, would you be so kind as to accept it as a solution & give it a thumbs up.

Thanks!

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Random1232 32 on at

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Thanks!

I cannot use the varNum for this purpose since it has dependencies. That's why I was using local variable. But this gave me an idea to clone the varNum using OnVisible property of screen.
UpdateContext({lvarNum:varNum})
Then I used this local variable lvarNum as you mentioned. This way I can change the local variable without affecting the global one.

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