Respawning after blowing

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Hi there, I am trying to make a script over here, and is not working..

Look my code:

  
function setVehiResp() 
        local vehi = createVehicle ( 497, x, y, z + 1) 
    addEventHandler("onVehicleExplode", vehi, function() setRespwnTim(x,y,z) end ) 
  
end 
addEventHandler("heliUpgrade", getRootElement(), upgradeHeliSpawn) 
  
function setRespwnTim(x,y,z) 
    setTimer(function(x, y, z) createVehicle(497, x,y,z+1) addEventHandler("onVehicleExplode", this, function() setRespwnTim(x,y,z) end)  end, 2000,1, x,y,z)  -- this is the line 20 
end  
  

WARNING: [gamemodes]\[bp]\bp\server_money.lua:20: Bad argument @ 'addEventHandler' [Expected element at argument 2, got nil]

The argument "this" was suppose to work.. since its the element that the event was attached, the element vehi..

Thanks alot in advance!

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Problem fixed, thanks