CSS classes not global ??

I have code in a menu symbol which controls classes.

I have classes applied to other symbols, which should react together. Ex:

sym.getSymbol(".indef").play("indef-art");

This should cause 4 symbols with the respective class to play at the same time, right?

Instead, either only 1 symbol plays, or they play in sequence when the button is clicked.

Thanks for your advice.