Fluid Component in Add Mode Processing (Search)

We are developing a fluid component and during Add mode, on the search record, there is some peoplecode, which kind of displays/hides some fields depending on the values selected as you can see below (from classic component). But, in fluid, this is not working. I mean 'field change peoplecode is not triggering. I couldn't find anything in Peoplebooks for this. Is this functionality available in fluid (since it uses pivot grid rather than standard search)?