![]() Wiggle(.5,20) will adjust the position value by 20, 0.5 times per second. ![]() Wiggle randomizes the value of that property by the amplitude defined at the rate defined. So the above expression could look like this: ![]() While we're at it, it's also good to know that paragraphing doesn't matter. After cleaning things up like this (especially for Radial Scan), things were a lot easier. I remember when I was creating the Linear Scan animation preset I had so many reference values in my expressions that when I got tired I couldn't fix problems anymore. Also, if I wanted to change Offset to a different slider, all I have to do is select the Offset variable and just pick-whip the new variable that I want. If ever there should be an error anywhere in the expression, or if we need to change anything, we can do it very easily. Reference=thisComp.layer("Null 1").opacity Offset=thisComp.layer("Null 2").effect("Offset") Divider=thisComp.layer(Null 2").effect("Divider")("Slider") This can look a lot cleaner if we did this: (thisComp.layer("Null 1").opacity + thisComp.layer("Null 2").effect("Offset")("Slider"))/thisComp.layer("Null 2").effect("Divider")("Slider") They are mostly useful for cleaning up your expressions. Variables are basically sets of words that you assign values for. To place an expression, just ALT-CLICK on the stopwatch! Keep in mind you can still apply keyframes. Though sometimes it does get out of hand.
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