[TYPO3-mvc] Can not use the showmicrodata Button need help or a turorial who works.

[Bader Paul]

Hello List.

I will use the neu show microdata Button in the Backend.

I could`t found any Tutorial:

I see the microdata button in BE in the htmlarea but i can't them use - what is wrong?

I need TYPOSCRIPT or I have something to activate or install? What I have to do that this feature is working.

I found nothing width google and the rtedocumentation 4.7 was not helpful for me.

Thanks to all for help or answer 

Paul