You need to follow me dude, I gave you instructions for first modifier. If you done it right and work like I described continue with adding Modifier 2 with same settings as Modifier 1 only with exception of modifier conditions. You must specify those M1=7 It should look like this:
Add in Modifier 2
Modifier conditions - M1=7
Type of controller - button
Interaction mode - inc
Auto repeat check
Bookmarks