UDP `Edit_Target Label` no longer working

A few years back, I used to be able to send a UDP string like this:

<U2>Edit_Target Label Cue 90000 1 -1 House Out

And it would label Cue 1/9 "House Out"

But now that no longer seems to be working. Was this removed on purpose? Is there a different/new way to label cues via UDP?

It also seems like

<U2> $ Blind #

is no longer working either, when it used to.

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