Bc2000 (for the BCF2000 & BCR2000)

I want to program a button so that the BCR sends out a sysex chain containing a variable value where :
- val = 00 when the button is pressed once
- val = 32 when the button is pressed once more
- val = 64 when the button is pressed once more
- val = 96 when the button is pressed once more
- val = 00 when the button is pressed once more
and so on,

so that I could toggle e.g. between the waveforms of DCO1 and DCO2 or between the ranges of DCO1 and DCO2 of my JX-8P without having to use up a rotary encoder for that purpose.

Is that possible?