OSC UDP How to specify fade time for subs?

How do you specify fade times for subs activated/deactivated by UDP strings?

/eos/user/42/sub/601/full  fades it up at ??? time.

/eos/user/42/sub/601/out  fades down at a slower ??? time.  Changing the sub's up/down time doesn't seem to affect this 

/eos/user/42/sub/601/out/time/0 doesnt work

/eos/user/42/sub/601/time/0/out doesnt work

/eos/cmd="Sub 601 At Out Time 0" doesnt work.  Actually I cant get any /eos/cmd=".... to work

Thoughts?

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