I extension two BO, add the same element: XMID.
The frist extension BO, element XMID:ProjectID; then enhance the screen. It is OK.
The second extension BO, because the same name, so the element can't name XMID, I use: [Reference] element XMID;
But the second extension BO, when I enhance the screen, , the XMID can not display, what is the problem?
How can I do ? It is Urgent.