Curves display hide toggle normals add shortcut

Hello,I’ll would like to create a shortcut for N>curves display normals.

I’ll try in 3d view> curve “active_object.data.show_normal” but it don’t work… despite it’s work for handle with “active_object.data.show_handles”

Can you help me?

Thank by advance for your help.

I’ll just find: active_object.data.show_normal_face avec wm.context_toggle dans 3d view curves