remote control / send tap

Hello all,

I'm trying to make a remote control for my Kobo H2O.
For now, I installed a webportal mod for testing and want to use KOReader as my reader, because I want to use DJVu files (rally roadbook).

I try to use the tip in the Kobo forum to catch taps on screen :

which is fine under nickel, but that doesn't record anything when in Koreader.

Is there another way to do that, like a LUA script sending an event somewhere ?

Thanks.

Hien.