Help me with buy ability trigger :)

[Legendary]

• Volley Learned
  • Events
    • Unit - A unit Acquires an item
  • Conditions
    • And - All (Conditions) are true
      • Conditions
        • (Unit-type of (Hero manipulating item)) Equal to Wind Shooter
        • (Item-type of (Item being manipulated)) Equal to [|cffffd700W|r] - |cff90ee90Volley|r
  • Actions
    • Set Units = (Triggering unit)
    • Set Ability[(Player number of (Owner of Units))] = Volley
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Level of Ability[(Player number of (Owner of Units))] for Units) Less than 1
      • Then - Actions
        • Unit - Add Ability[(Player number of (Owner of Units))] to Units
        • Game - Display to (Player group((Owner of Units))) for 10.00 seconds the text: Volley Learned!
      • Else - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Level of Ability[(Player number of (Owner of Units))] for Units) Less than 3
          • Then - Actions
            • Unit - Increase level of Ability[(Player number of (Owner of Units))] for Units
            • Game - Display to (Player group((Owner of Units))) for 5.00 seconds the text: (Volley's Level + ( is + ( + (String((Level of Volley for Units))))))
          • Else - Actions
            • Game - Display to (Player group((Owner of Units))) for 5.00 seconds the text: This spell is alrea...
            • Player - Add 1 to (Owner of Units) Current lumber

hmm i guys i was wonder why isn't the trigger risisting the hero? i set it to wind shooter but if i use another hero its okay why is that?

 

[HesitationSnow]

i set it to wind shooter but if i use another hero its okay why is that?

Not this trigger's problem then.