Form:Help Desk form below have dop down field with values Low, Medium, High as priority. I have set the datacard items property as Choices ('Priority (Tickets)')** to show the value saved from database.

Datasource = DataverseTable( Tickets) Item = Gallery4.Selected

Datacard:

Default = ThisItem.Priority

Combobox within Datacard:

DefaultSelectedItems = [Parent.Default]

Items: Choices ('Priority (Tickets)')