Do one of the following:
Click Add Part.
A new row appears. The type of content is set to xs:string.
Right-click the configuration box for the message and choose Add Part from the pop-up menu.
A new row appears. The type of content is undefined.
Drag an element or type from the Navigator window onto the configuration box for the message, and above or below an existing row.
A new row appears. The type of content is set to the element or type that you selected.