Help please

I am trying to enter this piece of code into a HTML block

<p align="center">
<iframe style="border: 1px solid #777" width="700" height="500" frameborder="0" scrolling="yes" src="https://www.google.com/calendar/embed?showTitle=0&showPrint=0&showTabs=0&mode=WEEK&height=600&wkst=2&bgcolor=%23cccccc&src=motivationalradio%40gmail.com&color=%23182C57&ctz=Pacific%2FAuckland">
</iframe></p>
it is simply my google calender.

I can add it to Html edit and update it, but it does not stay there. What am I doing wrong?

Help please somebody

Try replacing your /administration/js/page_builder_tiny.js with the one I've attached.  Then delete all files in your /cache and /cache_public directories, but leave any .htaccess files.  You may even have to clear your browser to see the changes.

Also... these mods may be of interest to you:

http://www.boonex.com/unity/extensions/entry/Personal_Scheduler_module

http://www.boonex.com/unity/extensions/entry/Scheduler_for_Groups_module/