REPLACE

for k,v in pairs(newTarget) do
	if not isInArray(t, Creature(newTarget[k]):getId()) then
		if lTargetPos:isSightClear(Creature(newTarget[k]):getPosition()) then
			rValue = newTarget[k].uid
			break
		end
	end
end

WITH

for k,v in pairs(newTarget) do
	if not isInArray(t, Creature(newTarget[k]):getId()) then
		if lTargetPos:isSightClear(Creature(newTarget[k]):getPosition()) then
			if not getTilePzInfo(Creature(newTarget[k]):getPosition()) then
				rValue = newTarget[k].uid
				break
			end
		end
	end
end