Texture Painting a Bump Layer using the Texture Slots

The bump texture added to the Texture Slots doesn’t seem to be working for me? I added a grey bump texture, painted some white and black, but the model in the 3d view appears to be unchanged? Also, I tried adjusting the Texture Paint opacity slider, but its NOT adjusting the look of the model?

Clearly, I’m missing something…


I figured out the bump, but the texture paint opacity slider isn’t working for me?