Elektron Musical Instruments

Hello,

I'm in the process of writing an app that will make the VO synth speak 
(sentences, whatever) over MIDI.

I have the basics working, but one thing I would like to implement is 
turning on/off slide for certain sounds...  is there a sysex for this? (as 
it's implemented in the sequencer, it may not be possible over MIDI?)

cheers
ripe