Using harmony remote, I need to select channel 120 on my VCR. The VCR uses three buttons for this, first a 100 button, then the numbers 2 and 0. Harmony tech support found a "greater 100" setting to make this happen. I need to do it again and I can't find it. Techs have all gone home and it's making me crazy. I have a harmony 720, but I think it's the same technique for all harmony remotes. PLEASE help. THX