PLayer Computer picks hero; unavailable for all players

[Mapcreator_BL]

How can i make the hero selected by computer players, unavailable to human players.

I have tried these

• AI Command
  • Events
    • Time - Elapsed game time is 13.00 seconds
  • Conditions
  • Actions
    • Set Random_Hero = (Random integer number between 8 and 10)
    • Player Group - Pick every player in (All players matching (((Matching player) controller) Equal to Computer)) and do (Actions)
      • Loop - Actions
        • Unit - Create 1 Hero_Array[Random_Data[Random_Hero]] for (Picked player) at ((Picked player) start location) facing Default building facing degrees
        • Set Hero = (Unit-type of (Last created unit))
        • Player - Make Hero Unavailable for training/construction by (Picked player)
        • Special Effect - Create a special effect attached to the feet of (Last created unit) using Abilities\Spells\Human\MassTeleport\MassTeleportTarget.mdl
        • Special Effect - Destroy (Last created special effect)
        • Game - Display to (All players) the text: (A player has randomed + (Name of (Last created unit)))
        • Set Random_Data[Random_Hero] = Random_Count
        • Set Random_Hero = (Random_Hero - (Random integer number between 1 and 2))
    • Player Group - Pick every player in (All players matching (((Matching player) controller) Equal to Computer)) and do (Actions)
      • Loop - Actions
        • Player - Make Hero Unavailable for training/construction by (Picked player)
    • Wait 5.00 seconds
    • Trigger - Turn on AI every 2 seconds <gen>

 

[Mapcreator_BL]

and this (before)

• AI Command
  • Events
    • Time - Elapsed game time is 13.00 seconds
  • Conditions
  • Actions
    • Set Random_Hero = (Random integer number between 8 and 10)
    • Player Group - Pick every player in (All players matching (((Matching player) controller) Equal to Computer)) and do (Actions)
      • Loop - Actions
        • Unit - Create 1 Hero_Array[Random_Data[Random_Hero]] for (Picked player) at ((Picked player) start location) facing Default building facing degrees
        • Player - Make Hero Unavailable for training/construction by (Picked player)
        • Special Effect - Create a special effect attached to the feet of (Last created unit) using Abilities\Spells\Human\MassTeleport\MassTeleportTarget.mdl
        • Special Effect - Destroy (Last created special effect)
        • Game - Display to (All players) the text: (A player has randomed + (Name of (Last created unit)))
        • Set Random_Data[Random_Hero] = Random_Count
        • Set Random_Hero = (Random_Hero - (Random integer number between 1 and 2))
    • Wait 5.00 seconds
    • Trigger - Turn on AI every 2 seconds <gen>