[JSUI] Parameter only in Blobs?

So I get that I need to use getvalueof and setvalueof to enable parameter mode correctly in javascript and C.

But now it appears that JSUI reverts to _parameter_type blob every time I open my patch. This disables most of the stuff associated with it. What's going on here?

I'm using a copy of the default JSUI dial

EDIT: Okay I can make it work if I put this in global code:
this.box.message("parameter_enable",1);;
this.box.message("_parameter_type",1);;
this.box.message("_parameter_invisible",0);;

but it's still not working in Ableton 10, only in Max