Just missed a Bang! Ouch!

Hallo everybody,
I'm a newbie with PD and I need some help.

I downloaded a live granulator patch. I'd like to add some "gate" on the input in order to make the patch work only after a certain mic threshold - because it will be a sort of installation.

I used "moses" and it makes what it should, but don't change the volume of the input (to 0).
I think it's related to the hot/cold inlets, but I didn't find any solution.

Could you please help me?
Thank you

3-7-2-1-granular-live.pd