Detection and Distance

[Sophion]

This might be imposible, but these days were making break-throughs.

How do you make a trigger go off (or it could be scripted) when East is detected and a certain unit is in a selected distance between a unit?

EX:
1)   Unit1 sees a Russian
2)   Unit1 wants to fire a flare but cant due to other unit's distance
3)   then Unit2 arives within the selected area
4)   Unit1 fires flare

I know how to get the flares to shoot but all i need is to know how to make it work.

[THobson]

Trigger set to East deteced by west

condition field =
this and (loon1 distance loon2 < X)

where X is the distance you want to use

[Sophion]

AH!!!  

Sophion-Black Fels Smartar!