Need Help With doRemoveItem

[Taywedgy]

I am trying to create a script where when you step on the selected uid tile. The "tree" will disappear.

This is the script I am using.

------Made by BomBa
 local tree = {x = 129, y = 419, z = 7, stackpos=1}
 local monsterPos1 = {x = 129, y = 418, z = 7}
 local monsterPos2 = {x = 129, y = 420, z = 7}

function onStepIn(cid, item, pos)
 local monsterFlower = "Moonflower"
	if getPlayerLevel(cid) < 120 then
	   doMoveCreature(cid, NORTH)
	   doCreatureSay(cid, "You must be at least level 120 or higher.", TALKTYPE_ORANGE_1)
	 elseif getPlayerLevel(cid) >= 120 then
	   doRemoveItem(2717, tree)
	   doSummonCreature(monsterFlower, monsterPos1)
	   doSummonCreature(monsterFlower, monsterPos2)
	   doSendMagicEffect(monsterPos1, CONST_ME_SMALLPLANTS)
	   doSendMagicEffect(monsterPos2, CONST_ME_SMALLPLANTS)
 end
 return TRUE
end

Bomba made the script, I've just been editing it for what I want.

I am very new at scripting and I think this is a very simple script.
Please help me remove "tree"