I'm still having trouble sorting out exactly how the scheduler works.
If I have 2 jobs for the night, and I want to have one start only once the target reaches a certain altitude, it seemed logical to set up:

Job 1 Higher priority number (say 10), only constraint is twilight. Job takes about an hour, have it repeat until terminated.
Job 2 Lower priority number (5), constraint twilight + Alt > 37°, repeat as desired

When I do that, the scheduler marks Job 1 as Invalid
What should I do differently? Thanks