Help with texture paint in game engine?

So I have a grass texture on a plane and I painted a path with texture paint I then saved it then quit. The next day I come on and on my plane there is grass but there is no path it is just the grass texture. What happened?

Did you save the painted path texture before saving the blend file ?

um no, lol how do I do that

On the UV/Image editor window header use the Image / Save Image as menu entry. Then use this saved image in your texture stack.

oh ok thanks Richard