Have you seen this yet? http://resolume.com/forum/viewtopic.php?f=7&t=15035

Could you describe your setup a bit?
Are you already using Resolume for playback?

You could also try the Envelope end points:
https://resolume.com/support/en/envelopes

OSC messages received on
/composition/layers/1/clips/7/video/source/lines/width will drive the parameter directly, which will ignore the in/out points.
You can use
/composition/layers/1/clips/7/video/source/lines/width/phase
which will make the param move between the in/out.

Interesting, made a ticket.

Relative control is great when you have an operator who only does that.
But with pre-set clips, if you need to play the camera clips for any reason out of order, or someone knocks the camera, your shots will be out of position.

This one is also corvid,http://resolume.com/forum/viewtopic.php?p=83001#p83001
But why not try it?
You can get the Resolume installers from our download page http://resolume.com/download

Are you on mac or windows?

Sienna NDI monitor can switch between Absolute and relative PTZ controls. If it can't control the camera in Absolute mode either, the issue will be on the camera.

Maybe the device is unable to process the alpha channel. To check this quickly, try the Solid color effect on the Composition, with Show image enabled, and color set to black.
That should work to fool the NDI converter.