unlocked lua autoloot on kill

[shahab200]

i tried to write this script by searching in api s that i can use (i just started learning lua) so here is my code

local name = GetUnitName("target")
print(name.." is locked!)

local frame = CreateFrame("FRAME", "FooAddonFrame")

frame:RegisterEvent("PLAYER_TARGET_CHANGED")

local function eventHandler(self, event, ...)
print("function called!")
frame:UnregisterEvent("PLAYER_TARGET_CHANGED")
print("unregistered")
TargetLastTarget()
InteractUnit("target")
print("looted!")
end

frame:SetScript("OnEvent", eventHandler)

why the result is some thing like this?

Serpentrix is locked!
function called!
unregistered!
loot done!
function called!
unregistered!
loot done!

it calls my func 2x while i want to call it once (o.0)

[stoneharry]

If you print out 'self' and the 'event' then you should get a bit more debug information as to why the event is firing twice.