[xmonad] To what xmonad renames the Menu key?

Hello. I typically swap the Menu and the right Ctrl keys. I used to do with xmodmap: remove Control = Control_R keysym Menu = Control_R keysym Control_R = Menu add Control = Control_R I just switch them around. The menu key becomes ctrl and the right ctrl becomes the menu key. This stopped working all of a sudden. Also, I noticed that the menu key has become the mod key. I'm wondering if xmonad remapped the menu to become the mod key? If yes, how is it called? Maybe "Mod_R", or "Mod_2" or something? Although, I tried these two names and it didnt seem to work. So again, how do I switch places the right Mod key and the right Ctrl? Thanks in advance for your time and help. Jenia.