User Selection in Dialog attached to Start Event

Hello,

I am currently designing an APG Flow and have a starting event with a dialog attachted to it, where the user can enter the basic information for the request.

I do have a field in the dialog where the User needs to enter a user, which is of course a user selection box element.

In the data flow i cannot attach a user or user group/org unit to that field as a Group filter.

Is it intended that you cannot assign this for the start event? Or am i doing something wrong?

I also have a manual task in the flow also with a dialog where this assignment works perfectly.

Kind Regards,

Mathias