[SOLVED] Display Webcam Image on switch change

I’m new to openHAB and I already like it a lot.
I want to use a android tablet to control my home.
At the moment I have a door bell in combination with asterisk.
I configured the binding and when ringing the bell, a switch in openHAB changes to ON.
I want to display a image of my camera at the door, when someone rings the bell.

Is it possible, to build such a thing with openHAB?
How do I display a image on the Sitemap, only when the switch turns to ON?

Thank you

See the visibility subelement.

That’s it, Thank you!