This may be what you need.
;Artificial Intelligence Script
;Conjured Objectives
desc = Display Objectives Within Zone
;Triggers
:state=0:hudreset,hudx=50,hudy=90,hudimagefine=gamecore\huds\MovementObjectiveBox.dds,hudname=objectives,hudhide=1,hudmake=display,state=1
:state=1,plrwithinzone=1:hudshow=objectives,state=2
:state=2,plrwithinzone=0:hudfadeout=objectives
;End of Script
If you want the hud to only show once when you hit this trigger, then change the last line to read:
:state=2,plrwithinzone=0:hudfadeout=objectives,destroy
Cheers
Mike