[Trigger] Unit begins construction

[SeRviLy]

The trigger below does not seem to work. I simply cant figure out why, it looks so simple right? The trigger will work if the triggering unit is set to a specific unit on the map, which i dont want, must be the triggering unit.

Untitled Trigger 002
Events
Unit - A unit Begins construction
Conditions
Actions
Unit - Set mana of (Triggering unit) to ((Mana of (Triggering unit)) - 10.00)


And its minus 10 just so you know.

Forgot to say what exactly wasnt working about the trigger. The trigger is suppose to, id think, subtract 10 mana from a unit that contructs a building.

 

[SeRviLy]

Well if anyone cares to know i figured out a way to work around this. I just made a new trigger.

Scout Tower
Events
Unit - A unit Is issued an order targeting a point
Conditions
(Unit-type of (Triggering unit)) Equal to Peasant
(Issued order) Equal to (Order(scouttower))
Actions
Unit - Set mana of (Triggering unit) to ((Mana of (Triggering unit)) - 10.00)

Works out Great! =D