More trigger questions!

[Ace Productions]

Thanx peter for your answer. It worked perfectly well and will save me a lot of time from now on.
My problem with the leader thing though remains. I made myself a major and still they won't obey!  I've checked what macguba said and I am number one. As for making myself a group I don't know how to do it. Macguba can you please help the situation?  

Anyways now I have two more questions for trigger conditions:

1) I would like to have a trigger that will stop ANY western vehicle driver (even in an east vehicle) that activates it. How can I do it?

2) How do you check (for a trigger condition) if a unit is out of a vehicle?

[peter]

1) the side of the vehicle depends on its driver ...
    what do you mean by "stop" ? - if you want him to leave the vehicle unassign him ...

2) !(nameofunit in nameofvehicle)
    is true if heÂ's not in the vehicle and the trigger will be activated ...

3) what happens before the units join the player ?
    ... maybe you would have to execute something like player join grpNull before you let them join ...