This kind of trigger needs a little help.

[Dragon 6]

I want to send an AI Helo or another player deep into enemy territory to strike a convoy of ammo trucks that are at a halt. I have made a large trigger around the target. All I want to know is  when I cross over the trigger by means of a sidechat. Right now the sidechat comes on when I start the game. But I want the sidechat to come on when I cross into the trigger area. Here is my trigger setup.
Activation= Vehicle
Detected by = East
Type= None
Condition=this
Is there anyone who can help me finish this. Maybe I am thinking about this in a different matter. I have looked for other triggers, nothing gets close to this one. Thanks Guys
On activation= the sidechat

[Dagon]

Buenos Dias

Here's what I recommend for you:

Create the trigger, and then select "groups". Draw a line from the trigger to the helo; this means only the helo can activate the trigger. Now set the trigger's activation to "any group member" "present"

Leave the activiation method as "THIS"; and set activated to "(heloname) Sidechat (Message)".

Lemme attach an example. Fly directly north (over the top of the column of trucks) and you'll hit the trigger and you'll sidechat to yourself.

[Dragon 6]

Mr. Dagon
Thanks for your reply. I will try this later on to night.

[Dragon 6]

Hey Dagon !!!
The sample you gave me works real good. It will fit right in to my mission with just a little bit of a change. But I can work with this. You saved me hours of brain storming work.
Thank you very much, you made my day.
Dragon 6

[Dagon]

hey, no problem. If you have any other questions, ask them.