Jay, here is maybe an easy way.
I made a black .PNG image outside Hype with a hole in it (pie) and placed it in Hype, put a circle shape above it that becomes the ‘clickable’ part and a colored square below it functioning as the ‘fill’ for the pie.
I then created a new timeline ‘fill01’ and increased the width of the colored square until it filled the ‘pie’. Above the point where the fill animation ends (at 02.00) I placed a new keyframe with a pause timeline action.
Next to that another keyframe now with 2 actions. The first action tells Hype to go back to time 01.27, the second tells Hype to continue this timeline but in reverse direction.
The 'clickable circle has one action assigned to it, continue timeline (instead of start timeline) with the ‘can restart timeline’ function turned on. This way the clickable circle keeps telling Hype to keep running this timeline.
fill1:1pie.hype.zip (25.1 KB)
Hope this helps a bit.
When I re-started Hype3 some time ago (I had V2 but it didn’t make much sense to me), I decided to follow a few lessons at Lynda. That really kick started working with Hype for me and was worth every (what was it?), 27 bucks. Maybe an idea for you.