Using defcustom to set width and height for set-window-scroll-bars

[Heime <heimeborgia@protonmail.com>]

Am using a defcustom to specify the scroll bar size (width, height) in pixels
for use with set-window-scroll-bars

Emacs seems to get confused in applying width and height.

(defcustom bdrive-barsize 80
  "Customizable variable to store the scroll bar size in pixels."
  :type 'integer
  :group 'bdrive)

  (let ( (window (selected-window))
         (width bdrive-barsize)
         (vertical-type 'right)
         (height bdrive-barsize)
         (horizontal-type 'bottom)
         (persistent nil) )
    (set-window-scroll-bars window width vertical-type
                            height horizontal-type persistent))