Anim help

I've watched the video multiple times and am using the dataref guide but things just don't make any sense.  I'm working with the FJS 727 set which I had to rename to FJS72Fv3.set and put it in the custom folder before it would work.

Supposedly anim 1 handles the length of the apu cable. There are two boxes for anim1 - a top and bottom one.  No matter what I put in any of the boxes the length never changes.

Is the top box used for length and the second for time?  It was mentioned in the video but the mouse was waved in the general direction of the boxes so I couldn't tell what box he was talking about and the explanation of where the time went didn't refer to any boxes.

I also notice that the APU plug starts at some offset to the right and adjusting initial values for it's position to not help.  I tried to adjust the anim3 value to get it centered under the plane on the very first line but that didn't work.