function Math.NotRepeatRandom(num1,num2)
	local tblNumbers = {} 
	local low=num1
	local upp=num2
	local num;
	local exists
	for c=low, upp do
		repeat
			num=Math.Random(low, upp)
			exists=false
			for index,item in pairs (tblNumbers) do
				if item==num then exists=true end
			end
		until not exists
		tblNumbers[c]=num		
	end
	return tblNumbers
end