Why doesn`t ChooseFromList retrieve value?

Hello!

I hope to get your advice to solve my issue with "ChooseFromList"

in "Edit" item

on the Form without "ObjectType".

I have to choose one of "Item Group" from the list, and execute a query to fulfill "Grid" on Form for fast create Purchase Order. But when I stick ChooseFromList with Object Type = 52 and open this list in UI after chosen item group my field "Edit" item remain empty

Thanks!