[Trigger] GUI Array Index error

[Braylon08]

Move Creeps
Events
Unit - A unit enters Spawn Back <gen>
Conditions
(Owner of (Triggering unit)) Equal to Neutral Hostile
Actions
Unit - Move (Triggering unit) instantly to (Random point in Variable1[(Random integer number between 1 and 3)])
Custom script: call RemoveLocation(udg_Variable1)


Whenever I go to save this trigger it auto dis-enables it.

Variable
Name: "Variable1" Variable Type: "Region Array (1)" Initial Value: "none"

Why doesn't this work.

 

[Maker]

set Integer = Random number...
Unit - Move (Triggering unit) instantly to (Random point in Variable1[(Integer)])
Custom script: call RemoveLocation(udg_Variable1[udg_Integer])

 

[swipe5weep]

have you initialized the Region Array variables?