For example : I am having two single choice field, one is category and other is sub category Field. In category I am having value A,B and in sub category, I am having A1,A2,B1,B2. By default sub category must be empty, If I select A in category, I want to view A1,A2 alone in subcategory or if I select B in category, I want to view B1,B2 in sub category. Is it possible to do in JSM ??