How do I make enemy health bar

ok here is what i would like to do

having a way to spawn enemy but on spawn they also come with their life bar

likebar background would be black

but the bar would start from green to red depending on how much life is remaining

its for a TD i need a way to do it

I made an example project for you

Here you can see the exported version http://bit.ly/1Sub5nJ

Here is the capx http://bit.ly/1ojQAPN

awwwwwwww I love ya ty sooooooo much

well there is a problem since my enemies have 25 hp

it made it look not nice on enemies with more hp

but we have changed the script well my friend did since hes a c++ coder he know more then i lol

param 1 is spr_jeep.Health / spr_jeep.MaxHP * 150

param 0 is 250 - (spr_jeep.Health / spr_jeep.MaxHP * 250)

that way ... no mater the life of the enemy itll work the same

but thx a lot it pushed me up