MIDIBOX64 + FLStudio and the START / STOP problem

Hello , I just finish my second midibox64 now with 64 pots and 48 buttons … so the problem is :

when i send this message

FA 01 02 @OnOff or FA anything (because FA without the second and the third words is not possible in mk_syx.pl script)

nothing happend in FLStudio … the rest works fine and very well .

The strange fact is :

I wrote in MIOS STUDIO2.2 Syx Tool same message ( FA or FC ) and sent in the windows of tool and the FLSTudio STARTs and STOP ok .
What i wrong and where is the problem ?
Thanks .