Overlay over the bar?

[BlackScorp]

Hi all, iam trying t create an overlay with transparent background, it works so far but it ignores my bar. and now there is a top spacing because of the bar. what can i change in order to make it full screen?

This is how it looks like. At top you see the space

The Code

(defwindow bar
  :monitor 0
  :exclusive true
  :stacking "fg"
  :namespace "bar"
  :windowtype "dock"
  :geometry (geometry :x "0"
                      :y "0"
                      :width "100%"
                      :anchor "top center")
  (centerbox :orientation "h"
    (left)
    (center)
    (right)))
    
   (defwindow powermenu []
  :monitor 0
  :geometry
  (geometry
    :width "100%" :height "100%"
  )
  :stacking "overlay"
  :exclusive false
  (overlay
    (eventbox :onclick "eww close powermenu"
      (box :class "overlay-background")
    )
    (powermenu-actions)
  )
)

stacking does not work iam using swayfx and arch btw