In Dynamics 365 Online v9 is there a way to filter the subgrid data based on a lookup value from the main form that matchs a field on the subgrid line?
Ex: main form has lookup called "event". Main form has a subgrid of instructors, the subgrid line has the same field lookup "event".
When I select event on the main form; I would like the subgrid to filter the instructor list accordingly.
I see the javascript methods but they are unsupported. Would like to do it properly if its at all possible?
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