This should be a simple problem. I just want to append text into an existing ContentPane without clearing what's already in it.

Some background: I have a dictionary lookup tool that dynamically returns results into a ContentPane using setContent. However, there is a link for "More results" which fetches data from the server via XHRPost. I want to append this to the ContentPane, rather than reset the contents.

I've tried different things but can't get anything to work. Here are some examples of what I've tried: