Effect attributes and methods

Boolean active Returns a true value if the effect is turned on, or a false value if it is off.

Property param(name) {name is a string} Returns a property within an effect. For example, "effect("Bulge").param("Bulge Height")". Effect point controls are always in layer space.

Property param(index) {index is a number} Returns a property within an effect. After Effects finds the effect by its index in the Effect Controls window, starting at 1 and counting down from the top. This form is not recommended because indexes are not always in contiguous order in the Effect Controls window. If an effect parameter doesn't have a name, use the pick whip to select it.