The top node of the expression. If it is not set, the property keeps the value that its holder starts from, which the holder's page states.
VfxVector2DynamicProperty
Class Documentation
Edit documentationA vector2 driver value: the form in which a property of the component VFX system takes
a two-component vector from the driver graph. The holder evaluates the driver in Vector2 each time it
needs the value. IVfxBaseDriver describes when that is and
whether the random values of the expression are per particle or per emitter.