I cannot get SHIFT + GO to work via OSC. I tried to use
/eos/key/timing_disable_go
and
/eos/key/timingdisable=1.0
/eos/key/go
and
/eos/key/shift=1.0
/eos/key/go=1.0
/eos/key/shift=0.0
/eos/key/go=0.0
My OSC Program does not support multiple lines so the latter options are not possible.