[news.eclipse.tools.uml2] guard is lost after import?

[zxp@xxxxxxxxxxxxxxx (Zhao Xiangpeng)]

Hi, 

I have used uml2 to import an XMI file which contains a statemachine. 
However, I cannot get the guard body. As I watched in debug mode, I can 
get the guard's name, even the language, but I cannot get the body.

Can anyone explain this to me? Thanks a lot!

This is the xmi code snippet:
<guard xmi:id="_0QmH-iy_Edu_PcQ4wBPpTQ">
         <specification xmi:type="uml:OpaqueExpression" 
xmi:id="_0QmH-yy_Edu_PcQ4wBPpTQ" body="time>10" language="java"/>
       </guard>

Best,
Xiangpeng