Hi @simms7400 ,
Could you tell me
1)this field's data type that you want to update with this combo box?
2)the combo box's Items property?
3)your data source?
Do you want to set "Not Applicable" as the combo box's default selected value?
If so, you just need to set the combo box's DefaultSelectedItems.
1)If the combo box's Items is the listname, the field is text type,you could set DefaultSelectedItems:
LookUp(list,fieldname="Not Applicable")
2)If the combo box's Items is the listname, the field is choice type,you could set DefaultSelectedItems:
LookUp(list,fieldname.Value="Not Applicable")
3)If the combo box's Items is : Choices(listname.fieldname), the field is choice type,you could set DefaultSelectedItems:
{Value:"Not Applicable"}
Anyway, if you are not so sure about what formula to use, I need more detailed information.
Best regards,