A lot of thanks Dan for your answer and time….
That´s a great solution for “my problem”.
I am wondering one thing now… I have 21 text layers, and I want to divide them into three groups…
I have tried to create three null objets and then linking each 7 text layers to their null object, and then apply the expressions into the null objects but I hadn´t any result…
Can´t I do it? Another way to do? Could I create a group or something like this or apply the expressions to my 7 layers at the same time??
Thanks again Dan!!!