regarding setshape2 on clientside

[Frankie]

I'm making an invisible barrier (setshape2 on clientside)

I have it so only certain accounts can pass through, BUT, I want to make it so I can open/close the barrier to let people through that aren't listed, but I'm not sure how to do this since the script is clientside. if I add an open command, won't it only disable for the person opening it and not for the people I'm trying to let through since it's clientside? I hope I'm making sense here.

is there anyway around that? how can I make a blocking setshape on the serverside instead? that would be a solution.

haven't really scripted in a long time so I'm finding problems with such little things. thanks.