Are you trying to scale the layer or the sphere? You can tie things together with expressions so a change on one is a change on all. If you want them all to be different sizes, but to scale at the same time, expressions will still work, just apply an expression effect (slider) to a null object. Then put an expression on the scale like x+(pickwhip to slider effect) or x*(pickwhip to slider effect) where x is the size you want to be the layer’s base size.
– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)
No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.