Instances changes on Poly~ object does not work on Standalone

Hi,
I created a big standalone software (www.liveloop.live) which everything works beautifully but I noticed that "Interger->Voices $1->Poly~" don't work in my standalone application. Whenever I try to change the voices, nothing comes out of the Poly~ object. It does works perfectly with the Max runtime, but not in standalone.

I tested a simple patch and it worked, but I cannot figure out why is not working on my patch.

Any idea where the problem might be?

Thank you!