is there any way to decide whether Add Attribute VOP creates an attribute or not?

i need to expose to user control over whether the new attribute will be float, 3 floats, or vector and since i can't control Type Modifier from outside i have created 3 add Attribute VOPs and tried to switch between them, no luck
all 3 were created
then i try to switch attribute name between name and empty string but the attribute was created even without a name

I think you have to put the Add Attribute VOP inside an If VOP and set it up that way.

a good old IF condition
i forgot about that one
thanks