Return value of method call in Sequence diagram

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();

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.

Please refer to: