libsbml.EventAssignment.setVariable C# (CSharp) Method

        public int setVariable(string sid)
        {
            int ret = libsbmlPINVOKE.EventAssignment_setVariable(swigCPtr, sid);
            return ret;
        }

 public void test_Event_addEventAssignment2()
 {
     Event e = new  Event(2,2);
       EventAssignment ea = new  EventAssignment(2,3);
       ea.setVariable( "f");
       ea.setMath(libsbml.parseFormula("a-n"));
       int i = e.addEventAssignment(ea);
       assertTrue( i == libsbml.LIBSBML_VERSION_MISMATCH );
       assertTrue( e.getNumEventAssignments() == 0 );
       ea = null;
       e = null;
 }