Using omnitool.

[Romulator]

Well, the Omnitool is essentially a trigger for scripts to occur - similar to how a Player walks through an area in order for scripts to actually begin.

The area I'm thinking of would be theta_labs (I believe), since there is an elevator in that map. Look at the code they used for when you press a button in the elevator to close the doors. The Omnitool can do the same thing when it is used on a panel - since the "trigger" can be the Omnitool's animation as opposed to a button press.

Sorry that I'm not being much help about saying "what code is actually needed", but a good skill about learning is to see how it has been done before. It's most likely a Swingdoor, since SwingDoors are the doors which open and close. You can always try using code that you think may work, and if it doesn't, experiment with other similar codes in order to get your desired result.