E36 convertible rollover deployed

Hello,
My rollover bars have unexpectedly deployed and i was wondering if anyone knew how to reset them. I've heard that there's a special tool in thetool box that doe steh trick but i'm not sure which one it is or how it's done.
I also heard the instructions are listed in the owner's manual but i didn't get one with my car when i purched it.
Any help is appriciated!
Thanks.

In the toolkit, there should be a long,flat bar with a pin on the end. That bar is inserted behind each rollover bar to release the lock. Difficult if you've never done it.

thanks for your help.
it turns out i didn't have the tool in my toolkit.... not sure why.
I called BMW and they wanted about $60 for the tool and required 2 weeks for the special order! I couldn't wait that long so someone sent me the instructions and I ended up using a metal ruler.
Worked great and I saved $60 bucks.
So if you happen to ever lose your tool, give a metal ruler a try! haha.
And turns out the plastic window also was not damaged. There were a few large bumps left by the rollbar plastic covers but they disappeared after a couple days.
Thanks for your help.