Help with volume slider

Hey guys. I’m having a bit of trouble with my volume slider. I’ve got everything put in actionscript so that volume can be adjusted by sliding the bar; the issue is that it is backwards. When I click on the right side of the bar (100%) the volume sets to 0% and vise versa for the left side. I’ve uploaded the project file so you guys can see what I mean. I think the registration point of the bar might be causing the problem, but I don’t know how to fix it. Any help would be greatly appreciated!