Clearing Lookup Field on Update

Clearing Lookup Field on Update


I recently created a form with multiple lookup fields with various criteria used to display the appropriate choices. However, when I attempted to clear these fields "on update",  I was warned it was not possible for these lookup fields to be cleared "on update".

These lookup fields are cleared "on load" of the form.

Is there a way to clear these fields dynamically "on update" as a user selects, in this case, radio buttons, on the form.