Confbridge timeout dynamic

I set timeout of user to 60seconds and need to change to 120seconds if another user join the room. Is there a way to do that in a dialplan? (extension.conf)

Thanks for your help

same => n,Set(CONFBRIDGE(user,timeout)=120)

Thanks ambiorixg12, i try this but its change the timeout from the new joined user in the room, but the first joined user continue with the 60s timeout