Hi
probably you'll have to provide a bit more details
let's try to figure this out.
the default property can start with this
$"INOPP_{DropdownControlDivision.SelectedText.Value}_{yourDinamicControl.Value}_{Text(Sum(Value(If(!IsEmpty(YourOpptiesSource),Index(Last(YourOpptiesSource).uniqueID,"_",4).Value,"0")),1),"0000")}"
I don't know where do you get the YY dynamic value from
I don't know your datasource where you store the opportunities
what I'm doing here is to get the latest record in your Oppties datasource if there is any
if there is no record I'll take "0"
increment by 1 convert to Text and format this into desired output which is "0000"
there you go