Hi everyone,
I’m working on a SharePointIntegration form in Power Apps and I have a ComboBox named “ComboBox5”. In its Items property, I have the following expression:
Choices([@'Backup Projects 26-06-2024'].'TS Contact')
The SharePoint list is called ‘Backup Projects 26-06-2024’ and the ‘TS Contact’ column is of type “Person or Group”. The ComboBox works fine and allows me to search and select any user in the company.
However, I need to limit the ComboBox to only search within a specific group of users in Microsoft Entra ID, called example.group, which has about 20 people.
I tried using the Office 365 Groups connector with the following code in the OnVisible event of the screen:
ClearCollect(GroupMembers, Office365Groups.ListGroupMembers("12345678-1234-1234-1234-123456789012").value);
ClearCollect(GroupEmails, GroupMembers.mail);
(Note: The code “12345678-1234-1234-1234-123456789012” corresponds to the Object ID of the group in question.)
And in the Items property of the ComboBox:
Filter(
Choices([@'Backup Projects 26-06-2024'].'TS Contact'),
ThisItem.Email in GroupEmails
)
Despite this, the GroupMembers collection appears empty. I have tried with other groups of which I am the owner and get the same result.

Can anyone help me resolve this issue or suggest a better way to limit the ComboBox to users from a specific Microsoft Entra ID group?
Thanks in advance!