Have you already applied a brush stroke? The sliders only work in combination with painting to define the area you want to modify. Also, please check that you have Flow and Density set to reasonable values (not very low). Otherwise you will not see the effect of painting.
Thank you for the reply. I do have it working again and the issue was just as you described – Flow and Density set too low. Hey, I really appreciate your response. I’m new at this so I appreciate you taking the time to help me –