If you have ever tried to add some custom code to LearnUCS you will more than likely have noticed that the text box editor has a mind of its own. You try to paste some text in, then save the item, to then notice that what you pasted in has changed. This can be a real problem when you are trying to embed multimedia from another source.
A way around this is to turn the text editor off, this will give you a basic text box that you can then type or paste you embed code into. When saving this item, as the editor is off, what you added to the box will be kept as it was.
Below is an image showing where the controls for the text editor are:
[caption id="attachment_96773" align="alignnone" width="300"] Click to enlarge[/caption]
This button is a toggle between "on" and "off". Turning the editor off allows you to add codes, mainly embed codes from multimedia sources.
Hopefully you can now add items to LearnUCS and they will work as you expect.