Empty games list and no setting has been stored....

[DjDiabolik]

I have an Raspberry Pi2...... i use the latest OSMC stable release now included this fantastic libretro emulators.

I have installed ScummVM.. it's be add on "Games" menu and when i launch i can reach the GUI whitout any problems.
I have tryed to add a games....... i have add "Secret of Monkey Island" Italian from a pendrive connected to an usb ports and i have set some preferences like savepath.

The games it's works....... some issue on audio but it's works.
Exist from ScummVM and back to kodi...... relaunch ScummVM next day and boom.... empty list.

Apparently every time i exit from scummVM at next time empty list..........

I know and use for years scummvm on my windows pc........ it's a scummvm.ini issue or somethings similar ?
I have also read i can use a .scummvm files to launch directly the games from the source of kodi (like it's also do for .nes or other roms files) but i can't found a usefull guide how i need to create this files.
From it's i can set all i want preferences ? Like PATH of savegames or other things ?
Thanks in advance for every information.........