Is there a way to dynamically change the argument for [clone]? For example, if I have a clone object called [clone synth 16], can I somehow within the patch change it to have 20 instances rather than 16?

@yannseznec I don't think so.
If you put it in a subpatch and ONLY use sends and receives to talk to the clones then you could dynamically recreate it........ patch.pd
But you are going to have pops/bangs doing that and probably messages to the terminal in red about missing sends for receives..
It might be better to have as many as you might need and turn them on and off with a message to [switch~] or [block~]
Of course you could also recreate cord connections dynamically but that is much more complicated and you will still get the clicks as they are reconnected..
David