Embeddables - Widget Configuration

I am working on a widget configuration, I want to allow the HTML editor, however I am not seeing the Embeddable i created. They do appear when I am replying to a thread

Here is my Configuration for the field:

<property id="headerDescription" labelResourceName="headerDescription" dataType="Html" template="html" enableRichEditing="true" rows="1" columns="40" contentTypeId="" />
<property id="headerButtons" labelResourceName="headerButtons" dataType="Html" template="html" enableRichEditing="true" rows="1" columns="40" contentTypeId="" />