in a new project i make a new text layer.
i add an opacity animator and i click "End" Propery under Range selector;
i try to set a value to that prop:
app.project.activeItem.selectedProperties[0].setValueAtTime(0, 0);
and i get this error message:
After Effects error: Can not “set value at time” with this property, because the property or a parent property is hidden.
when i try again second time it work....