I did all I could trying to create a simple Relative phaser from 10 to -10.
It never works and I can't figure out what am I doing wrong on such a simple task.
I select needed fixture(s) and then :
1. Select R+ or Relative tab over Dimmer attribute
2. Dimmer at 10
3. Select step 2
4. Dimmer at -10
5. Save it as Selective
It runs fine as long as I keep the initial dimmer level on the fixture I had before creating it.. As soon as I change it, values from phaser don't make sense anymore.