Why does this while loop not start running?

while BatteryLeft.Value <= 100 and BatteryLeft.Value > 0 do
	game.Players[player.Name].PlayerGui.Battery.Frame.Bar1.Visible = false
	wait(1)
	game.Players[player.Name].PlayerGui.Battery.Frame.Bar1.Visible = true
end

BatteryLeft.Value does go below 100 but the while loop never runs. This happens all the time when I use a while loop xD

Can someone help?

I might sound like I don't know that much about scripting here but whenever I use while loops nothing happens. Unless it is because BatterLeft is an unknown variable to it because you did not do BatteryLeft =, I would reccoment doing this:

while true do
	if BatteryLeft.Value<=100 and BatteryLeft.Value>0 then
		game.Players[player.Name].PlayerGui.Battery.Frame.Bar1.Visible = false
		wait(1)
		game.Players[player.Name].PlayerGui.Battery.Frame.Bar1.Visible = true
	end
	wait(1)
end