Collision problem

$On Ship Collision:
[
if hv.Player:isValid() then
	str_nameofship = tostring(hv.Ship)
	str_nameofself = tostring(hv.Self)
	str_nameofobject = tostring(hv.Object)
	str_objectbreed = hv.Object:getBreedName()
	str_shipbreed = hv.Ship:getBreedName()
	if (hv.Object == hv.Player and str_shipbreed == "Ship") or ( str_objectbreed == "Ship" and hv.Ship == hv.Player) then
		hv.Player:kill(hv.Ship)
	end
end
]