binding NPCs to other NPCs

[nightsta69]

one of the ways i'm tryin to see will work, is during each EVENT_WAYPOINT the main NPC will signal to each minion, and the minion will check itself in relation to its position to the main NPC and readjust. but i'm still learning the perl functions, so still difficult for me.

something along the lines of NPC A signals NPC B. NPC B checks NPC A's $x,$y then checks its own $x,$y. and if they aren't at $x,$y+10, then moveto $x,$y+10. but I can't figure out how to find NPC A's coords with NPC B.