Equal Value safety switch (solved by next release r2xx)

[acefx]

Hi !
I'm pretty new ( and french! , excuse my english..) to Open9x programing
I recently added a Audio voice mod on my 9x and i have some problems in toggling voice files.
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I have the flight mode programed on P1 ( 4 mode for now, but maybe more ( it' a six position switch mod )
So
-Gps mode is @ 60%
-ATTI mode @0%
-RTL mode @20%
-ACCRO mode @ -60%

I want to play a sound each time a mode is chosen, so i've assigned momentary Func switches with "play files" function.
but i just cannot find a way to program a custom switch with a V = value or maybe better V+-= value
so my switches can toogle sound once each time i select it

Thanks in advance
(And sorry if the problem have been already solved )