eraser/selective coloring problems

Normally when I use a selective coloring layer (on PS7) I can erase bits that I don't want colored that way. However, I'm working on an icon right now and the eraser will not work on my selective color layer. It works on other layers, but not on the selective color layer. I don't understand what's wrong since it always worked before, so if anyone knows I'd REALLY appreciate it. Thanks!

ETA: Problem solved. Thanks chasingsafety!!!