Change path width with bindkey

Hello,

i want to change the width of a path while creating the path object with a bindkey.

i found a solution doing this job:

hiSetBindKey("Layout" "Alt<Btn4Down>" "hiToggleEnterForm() le0WireForm->wireWidth->value=le0WireForm->wireWidth->value+0.01 hiiToggleEnterForm(le0WireForm) ")

but i'm not happy with this solution because it opens every time the property editor. Do you know a skill function, which sets a property of the object directly when creating/drawing it?

Thank you for your help.