"Copy to selected" dose not work with curves ? or Nurbs?

Question

I want to set "preview U resolution" of all the selected curves to 48.

1. I select all the curves and shift select one curve change its "preview U resolution" to 48.
2. Set "preview U resolution" to 48.
3. Then right-click to "Copy to selected"

Copy selected is grayed out! Why ? does it not work on curve objects? or Nurbs ?

Note: it works fine on mesh objects

Answer 1

i learnt of copying through script from another post. And here is what i have changed to suit this purpose.

import bpy
active_obj = bpy.context.object

for obj in bpy.context.selected_objects:
    if obj != active_obj:
        # resolution U
        obj.data.resolution_u = active_obj.data.resolution_u 
        # We could also access other proerties like bevel
        obj.data.bevel_depth = active_obj.data.bevel_depth