Assembly model scale

Hi,

I would like to change the model scale of a whole assembly (Creo2)

Model \ Operations \ scale Model

> entering a scale value (1.5)

> confirmation (Yes)

This don't have any effect. So we have to change scale part after part.

Then, if this operation is not possible on an assembly, strange to see this option is available in assembly mode.

Is there any manner to do this ?

Thanks,