double CycleFrame (object obj, channel chan, frame frm )

Return Value: changes the value of [obj:chan] to be the value of [obj:chan@frm]

Arguments:

Overrides the value of obj's chan channel and changes it to what it would be if the current frame where from # frm.

Note: When using an expression that samples a channel's value at a frame other than NOW, the value returned will always be the value of the channel's motion curve at that time. You cannot sample an item's procedural motion at a frame other than NOW and not before it has been processed (i.e. you can't sample a motion that is driven by an expression that follows the current one). If you need to sample a procedural motion on a different frame the motion must be frozen first.

Example:

Exp_1
|_CycleFrame(Null, xpos, IN + [Slider:chan[ NullMotion ]] * (OUT - IN) )

This use of CycleFrame( ) will make Null:xpos cycle through the animation on it's xpos channel from the IN point to the OUT point as Slider's NullMotion channel is changed from 0 to 1.