Making cupboard doors fly open?

[DrMelon]

I've had a good look at the Choir East script, and I can see how they got the doors there to fly open - they applied an impulse to the bodies attached to the iron maiden entity.

However, I want to do something similar to a cabinet_nice entity, and in the model editor it shows the doors as being called "Body_1" and "Body_2". However, no matter which directions I put into the X,Y,Z fields in the AddBodyImpulse field in my script, the doors refuse to move. I've tried making the impulses stronger, and longer, but all to no avail. The cabinet's doors just stay closed.

Any help?