Dashboard Plugin and TouchUi

Hi all,

I am using a small display close to my printer running TouchUi.
Dashboard Plugin is installed for nice visualisation.

Of course it works fine at the PCs webbrowser but it won't with TouchUi.
I can open it ... but there is no way to close (ESC) it again.

A connected BT keyboard does not help.
Is there a way to open Dashbord at TouchUi and close it by touching the screen?