Hebrew solution.. right to left?

Hello! is any one know hot to set hebrew site (right to left)?

In the overview panel select the HTML tag. In the attributes field enter dir as key and rtl as value

This is locked!!! how can i change it? Thank you

You can also do it with css like this
( אתה יכול גם לעשות את זה עם css כזה )

body {
  direction: rtl;

תודה רבה!!!
thank you!