I used parent motion (track 1) so the text and the bar (tracks 2 & 3) could be rotated (or zoomed, or whatever) as one object. There are two masks at work on track 3. A positive one and a negative one, be sure to notice the mode. The positive one limits how much of the solid you will see, the negative one makes it disappear from the center out.
The opacity turned out to be 45 percent, see track 3 level.
Ignore the marker, things got moved.
Hope it helps,
Jeff
http://www.narrowroadmedia.com