Hashtable problem

[ultimate11]

So i have some doubts with hashtable use on buildings.It seems that hashtable dont save data corectly when use triggering unit (building).
whats my problem? lets start.
i have some towers.when a tower kill a unit he gain 4 ability of different type (water..fire etc).So when tower start an abiliity for ex fire ability all thoose ability are removed and saved variable fire = fire + 1 in hashtable.

• Skill learn
  • Events
    • Unit - A unit Starts the effect of an ability
  • Conditions
    • Or - Any (Conditions) are true
      • Conditions
        • (Ability being cast) Equal to Ele_ab[1]
        • (Ability being cast) Equal to Ele_ab[2]
        • (Ability being cast) Equal to Ele_ab[3]
        • (Ability being cast) Equal to Ele_ab[4]
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Ability being cast) Equal to Ele_ab[1]
      • Then - Actions
        • Set Fire = (Load 1 of (Key (Triggering unit)) from Table)
        • Set Fire = (Fire + 1)
        • Hashtable - Save Fire as 1 of (Key (Triggering unit)) in Table
      • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Ability being cast) Equal to Ele_ab[2]
      • Then - Actions
        • Set Water = (Load 2 of (Key (Triggering unit)) from Table)
        • Set Water = (Water + 1)
        • Hashtable - Save (Water + 1) as 2 of (Key (Triggering unit)) in Table
      • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Ability being cast) Equal to Ele_ab[3]
      • Then - Actions
        • Set Air = (Load 3 of (Key (Triggering unit)) from Table)
        • Set Air = (Air + 1)
        • Hashtable - Save Air as 3 of (Key (Triggering unit)) in Table
      • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Ability being cast) Equal to Ele_ab[4]
      • Then - Actions
        • Set Earth = (Load 4 of (Key (Triggering unit)) from Table)
        • Set Earth = (Earth + 1)
        • Hashtable - Save Earth as 4 of (Key (Triggering unit)) in Table
      • Else - Actions
    • -------- Getting ability code --------
    • If (Fire Greater than 0) then do (Set String_read[1] = (String(1))) else do (Set String_read[1] = <Empty String>)
    • If (Water Greater than 0) then do (Set String_read[2] = (String(2))) else do (Set String_read[2] = <Empty String>)
    • If (Air Greater than 0) then do (Set String_read[3] = (String(3))) else do (Set String_read[3] = <Empty String>)
    • If (Earth Greater than 0) then do (Set String_read[4] = (String(4))) else do (Set String_read[4] = <Empty String>)
    • Set String_read[5] = (String_read[1] + (String_read[2] + (String_read[3] + String_read[4])))
    • Set AB_code[1] = (Load 5 of (Key (Triggering unit)) from Table)
    • Set AB_code[2] = (Integer(String_read[5]))
    • -------- add/remove ab --------
    • Set Skill_points = ((Load 7 of (Key (Triggering unit)) from Table) - 1)
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • Skill_points Equal to 0
      • Then - Actions
        • Set Fx_dummy = (Load 6 of (Key (Triggering unit)) in Table)
        • Unit Group - Remove Fx_dummy from Fx_gr
        • Unit - Remove Fx_dummy from the game
        • For each (Integer A) from 1 to 4, do (Actions)
          • Loop - Actions
            • Unit - Remove Ele_ab[(Integer A)] from (Triggering unit)
      • Else - Actions
        • Floating Text - Create floating text that reads (String(Skill_points)) above (Triggering unit) with Z offset 0.00, using font size 12.00, color ((Random real number between 1.00 and 100.00)%, (Random real number between 1.00 and 100.00)%, (Random real number between 1.00 and 100.00)%), and 0.00% transparency
        • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
        • Floating Text - Change the lifespan of (Last created floating text) to 3.00 seconds
        • Floating Text - Change the fading age of (Last created floating text) to 2.00 seconds
        • Floating Text - Change (Last created floating text): Disable permanence
    • Hashtable - Save Skill_points as 7 of (Key (Triggering unit)) in Table
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • AB_code[1] Not equal to AB_code[2]
      • Then - Actions
        • Unit - Remove T_ab[AB_code[1]] from (Triggering unit)
        • Unit - Add T_ab[AB_code[2]] to (Triggering unit)
        • Hashtable - Save AB_code[2] as 5 of (Key (Triggering unit)) in Table
      • Else - Actions
    • -------- Ruler element --------
    • Game - Display to (All players) the text: (String(AB_code[2]))

So this trigger should save at the end a code coresponding to an ability.Problem is that if i have just one tower work great,but if i use multiple tower it messed up.the ability code is saved for every tower that i have.Wtf i used (key(triggerring unit))
whats wrong?

EDIT: FIXED