Hi,
Instance methods are called using the instance of the class and you want to call the method in the interface i believe which is not possible since interface only contains the declaration part.
Class which implement the interface is responsible to provide implementation to the methods of an interface.
During the implementation of interface methods you can directly call the instance method over there.
CLASS cls IMPLEMENTATION.
METHOD m_tab.
write:/ 'I am an instance method'.
ENDMETHOD
METHOD interface1~method. "
write:/ 'I am an interface method'.
CALLMETHOD m_tab. <<<< instance method
ENDMETHOD. "m_tab
ENDCLASS. "cls IMPLEMENTATION
thank you!!