Incoming random numbers and sequencing

Hi everyone!

I am relatively new to MaxMSP and I am struggling with a feature that I want to add to the system that I am currently designing.

I have created a simple random object that outputs numbers between 0 and 11. Then I have a coll which contains twelve objects indexed from 0 to 11.
What I would like to do is to develop a sort of multigate that allows only some of the random numbers to pass. I imagine an interface with something like a matrixctrl with 12 buttons - thus representing the numbers between 0 and 11 - and allowing only the numbers corresponding to an active button to pass. The outputted number goes into the inlet of coll and outputs a certain value.
Now, I am struggling with this part, finding an object or combination of objects that allow me to control the gate. I looked at things like route and similar objects, but I can't find the right solution.