If you use the "Numbers" Generator you can Link its Value to the Last Point Offset of your line and this will give you the effect.

Animating (or simply editing) the Last Point offset value will update the Number value onscreen.

This arrangement will obviously give you a 0-100 result such that at full extension of the line the Number value will read as 100. If you want a different value to be displayed by the Generator, all you have to do is change the Link's Scale value. For example, a Scale value of .75 will give you a value of 75 at full extension of the line.

You can of course also establish the relationship the other way around so that the line length drives the Number value.

Simon Ubsdell

http://www.tokyo-uk.com