Trigger Condition: Distance Between Two Groups?

I am making a trigger for a rendezvous objective. I want it to fire when any unit from one group is within a certain range of any unit from another group.

So far I have tried

meu_agrp distance meu_bgrp <200;

but no luck, haven't seen any other threads on this either. Any ideas are greatly appreciated.

I do believe you can find some useful information here:

http://forums.bistudio.com/showthread.php?t=81638

Basically you can't check the distance between two groups.

http://community.bistudio.com/wiki/distance

Instead try

(((units myGroup1) select 0) distance ((units myGroup2) select 0) < 200)

Thanks Taurus. While waiting I discovered the "leader" variable. I came up with

leader (meu_agrp) distance leader (meu_bgrp) <50;

This seems to work pretty well. However, do you know if "leader" will always return the current active group leader? In other words, if the leader gets whacked on the way to the objective and leadership falls to another unit, will this still work?

Yepp, and thats probably easier to type in too. :)

Sorry I'm getting tired.

No worries, thanks a lot for your help, you are a gallant and selfless fellow :)