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Infinite error.... PLEASE HELPPP !!!

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Posted on by ProtoSup

Hi ! I'm creating app in Power apps and especially a LogIn Screen and I check columns in my list of credentials with this script and I have this error → "Number of invalid arguments: 1 were received, 2 or more were expected"

my two inputs are "UserLabel" & "PasswordLabel"

Her late my btn script :

If(!IsBlank(LookUp('Credentials', Titre=UserLabel.Text && Password=PasswordLabel.Text).Titre),Navigate(HomeScreen),Navigate(ErrorLogInScreen));

here is my list :

I really don't see where the problem come from ....
Thanks for your help guys

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Building Power Apps

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eddiecoldrick 15 on at

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From memory, I think IsBlank(value) only allows one input, but your LookUp might return more than 1. Could you try using IsEmpty(value) instead?
Blank, Coalesce, IsBlank, and IsEmpty functions in Power Apps - Power Platform | Microsoft Learn
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timl 37,287 Super User 2026 Season 2 on at

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Hi @ProtoSup

If you're using a language such as French, you can try this:

If(!IsBlank(LookUp('Credentials'; Titre=UserLabel.Text && Password=PasswordLabel.Text).Titre ); Navigate(HomeScreen); Navigate(ErrorLogInScreen) )
ProtoSup on at

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Thanks a lot, it works perfectly 😁