Vim mode on komodo, replacement for esc key for normal mode

Hi,
I really like komodo vi mode but… could be it extended with inoremap, vnoreamp,… commands?

I mean, I would like to use this command to map the Escape key to ‘ff’ (double press the f key):

:inoremap ff <esc>

but it does not work, do you know any workaround? I tried also on the keybindings menu but I couldn’t make it work fine.

Its a little anoying to press the escape key to enter normal mode as it’s most far key from the keyboard, thats why I normaly change this setting on vim.

Thanks a lot in advance and sorry for my pool english!