This is effect called advanced lightning, it has those anchor point-like start and end points, I want to sync the the point going up and down to music. For that I will use the value Im getting from Sound keys effect [Im syncing it to bass]. I'd be parenting the value I get to anchor point X value, but I can't separate dimensions, what can I do to make this happen ?
Yep, as Mylenium said.
Arrays are expressions' way of addressing properties with multiple values. (Here's some good explanation.)
For 2d position, x & y become [0] and [1] in expressions. (For 3d: [0], [1], [2])
While technically not necessary, it's often helpful to use variables to keep track of what you're doing. So, yours might look like:
x=value[0];
y=(pickwhip to appropriate property);
[x,y]
If you wanted to retain control over the Y value, but have it also be affected by another property, you could do something like:
x=value[0];
y=value[1]+(pickwhip to appropriate property);
[x,y]
In that second case, it'll be linked to the Sound Keys property, but you'd also be able to keyframe the Direction independently of the expression. Whether you use +, -, *, /, etc. is up to you.
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