Show Advanced Options Won't Work

Hello.
I'm using XOT 2.1 and i'm had a problem with Show Advanced Options.
This checkbox stay unchecked and i can't check it.

I need text editor to add bold, italic and etc...

How i can do this?

Thanks in advance!

I think it depends of using XOT for flash or HTML5. Many properties are for flash and won't work using HTML5.
The programmers are currently working on a new editor.

Show Advanced options is only used at the moment for the Bootstrap template

Thanks, rhvanloenen and Tom.
In the new version of Xerte, i find the text editor, thas was what i needed.

One more question, how i can find the english pack for download?