Hi @HeikoHa,
Do you want to set a Default value for the Person field in the Edit form of your app?
The user @Brice235i has faced same issue with you please check the response within the following thread:
https://powerusers.microsoft.com/t5/Creating-Apps/Set-the-default-value-of-person-lookup-to-current-user-and/td-p/150247
I have made a test on my side, please take a try with the following workaround:
Set the DefaultSelectedItems property of the ComboBox control within the Executor Data card to following:
If(
EditForm1.Mode=FormMode.New,
{
DisplayName: User().FullName,
Claims: "i:0#.f|membership|" & Lower(User().Email)
},
Parent.Default
)
On your side, you should type:
If(
EditForm1.Mode=FormMode.New,
{
DisplayName: "The display name of the user you want to set as default",
Claims: "i:0#.f|membership|" & Lower("The email address of the user you want to set as default")
},
Parent.Default
)
More details about set a default value for a Person field in Edit form, please check and see the following blog:
https://powerapps.microsoft.com/en-us/blog/default-values-for-complex-sharepoint-types/
Best regards,
Kris