BHD: Trouble getting Helicopters to take off

I've been working on this mission for hours, and I'm stuck now because I've hit a snag. I have a helo land in the mission area to insert the squad. The problem is, I can't get it to take off. I've tried several different events, but I can't seem to get it working properly. Anyone know what my problem might be? Any help would be great.

Also, I have one more question. Is there any way to open the Novalogic made levels? It would be nice to have an example like that to learn from.

You might find the answer you are looking for in the following thread:

Control of helos in BHD

Thank you very much. It works perfectly now. Turns out I was missing some statements in my events.