Creating negative possitive through sysex

[synthesizergr]

hello i have a Marion MSR 2
the editor is almost ready to upload
i have only one issue
i used the midi learn button (it found immediately the sysex)
but some faders have negative to positive -99 to 99
i tried value -99 0 99 on top
and below from 0-127
but i doesn’t work
any advice?
best Dim

[keymanpal]

This latest post/thread has some info related, I think

Sysex fader set to 14-bit 2's complement signed?

E1 can handle MIDI values as: unsigned number (positive values only) 2’s complement numbers numbers with a sign bit Everything defaults to the unsigned numbers as they are most commonly used. The option to select the way of expressing the negative values (2’s compl and sign bit) will appear when you define a control that has negative numbers in its value range. eg: [image] The Sign Mode is the way of expressing the negative value The Bit Width tells E1 how many bits are used. That means, …

[synthesizergr]

Dear keymanpal i tried already that but still doesnt work

[keymanpal]

I’m afraid I cannot help much beyond the ideas on that thread…
Maybe some one else here with knowledge over SysEx?