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global variables are not allowed in start screen

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Posted on by pranavj619

in my application I'm using AzureAD coneector for authentication- OnStart property is set to -

If(
!IsEmpty(
AzureAD.CheckMemberGroupsV2(
User().Email,
["cfxxxxa0-7xx6-48x9-bxf3-xxxxxxxxxxx"]
).value
),
Set(
varAdmin,
true
),
Set(
varAdmin,
false
)
);

now what I want is - if the user does not belong to that particular Azure AD group he should be navigated to some error screen. and if he has access the home screen of the application should appear.

I tried using below code on onstart screen property. but I'm getting global variables are not allowed in start screen error

If(varAdmin = false, ErrorScreen, HomeScreen) ;

How am I suppose to redirect the user to the respective screens?

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Building Power Apps

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WarrenBelz 156,730 Most Valuable Professional on at

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Hi @pranavj619 ,

Unfortunately the long way, but this should work

If( IsEmpty( AzureAD.CheckMemberGroupsV2( User().Email, ["cfxxxxa0-7xx6-48x9-bxf3-xxxxxxxxxxx"] ).value ), ErrorScreen, HomeScreen )

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WarrenBelz 156,730 Most Valuable Professional on at

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Hi @pranavj619 ,

Just checking if you got the result you were looking for on this thread. Happy to help further if not.

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pranavj619 77 on at

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Hi @WarrenBelz I tried using the code that you gave. But now my home screen is showing blank...and it is not navigating to the error screen which I wanted.

Not sure what I'm doing wrong here
WarrenBelz 156,730 Most Valuable Professional on at

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Hi @pranavj619 ,

I simply used your code - if the test you provided is true, then it certainly will go to the error screen.
pranavj619 77 on at

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@WarrenBelz

If(
!IsEmpty(
AzureAD.CheckMemberGroupsV2(
User().Email,
["cfxxxxa0-7xx6-48x9-bxf3-xxxxxxxxxxx"]
).value
),
Set(
varAdmin,
true
),
Set(
varAdmin,
false
)
);

If I'm using this code...I'm be getting the boolean value...which I thought of using in the start screen...but it seems it is not working....when I replaced the variable thing with the screen names it not going anywhere....is there any alternate way where I can use the variable to navigate?
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WarrenBelz 156,730 Most Valuable Professional on at

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Hi @pranavj619 ,

Correct - it certainly should produce a Boolean true/false result, which will be reflected in the navigation options.

Below is one I use which may be useful (I do not use AzureAD). Note I am not a fan of the StartScreen function either - if it was not broke, why fix it . . .

With( { wID: LookUp( Office365Groups.ListOwnedGroups().value, id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" ).id }, If( User().FullName in Office365Groups.ListGroupMembers(wID).value.displayName, HomeScreen, ErrorScreen ) )

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pranavj619 77 on at

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@WarrenBelz Thanks for your input. In the end, I had to come up with a different approach, so that I don't have to go to other screen. I used my initial code where I'm setting up the varAdmin variable. I used this variable for the Visible property of my gallery.