Return value of method call in Sequence diagram

General Questions/Discussions
1

Is there a way to show return value of method call in sequence diagram. For example can anybody give me a step by step solution of folloving behavior:

 
class A {
...
   public void someMethod() {
      Panel panel=someClass.getPanel();
      someOtherClass.setPanel(panel);
   }
...

If I create a method call on getPanel() and then click on the return message icon of that call I can select only methods from class A.

2

Please refer to:
http://forums.visual-paradigm.com/posts/list/1700.html