Permanent Area Atk to Tick and Roach

Get all units near it (in cylinder/sphere of radius x) and if any is enemy, issue attack order on it.

Although setting it to fire at will should work just fine...

quote: Did not understand can you explain better?

Hm, I'd assumed you were doing a widget.

(if you need the function params, look them up on Spring wiki)
Spring.GetUnitsInCylinder OR
Spring.GetUnitsInSphere

Go through the list of units returned, and if any of them fails a Spring.AreTeamsAllied comparison of their team vs. yours, Spring.GiveOrderToUnit with CMD.ATTACK.

quote: Did try but it did not work the way i wanted, roach/tick moved long before any unit got near enough to uncloak it.

Hold Position
(but then you'll probably want a way to reset to Maneuver when the Roach is moving)