Is there like a special key I need to unlock the top of my convertible top? on 2004 BMW 325Ci

Is it like an allen wrench or what? The release button won't open it and I think it needs a key to open it.

Asked by for the 2004 BMW 325Ci
it is under the rear seat under the black plastic cover, it is also used to latch the top to the windshield, have someone hold the top close and crank it clockwise a number of turns until you see it grab, then crank until the light goes out above the top up button this is in your operators manual