Input form. Associated Fields for Multiple Choice type of input

Hello,

Here in Robomarkets we use Vizlib Input Form to make alternative interface for our CRM System. 

Right now, all functionality is processed perfectly, instead one moment. We have a list of campaings for calling, and we use Dropdowns with associated field as an option to reduce list of campaigns using Types and Groups. But all campaigns have a list of Tags, like 20-30 unique ones for the campaign, and we need to choose a lot of them to profile the call right way. And this is the problem. We can choose a field with tags list, but we cant associate it to specific campaign^ and we see all 500+ tags in a in input zone, because functionality of Associated field doesn't exist in Multiple Choice type of input.