Test case source precedence for the message element Instance Message 10.1.12.b source precedence for message element You should see 2 buttons, the first one should display a message that says 'Instance Message' and the second should be 'External Message'. The first message has a bind, src and inline data, the bind attribute should be used (it points to instance data). The second message has a src attribute and inline data, the src attribute should be used (it points to an external file). Single node binding vs. linking attributes Inline Message Linking vs. inline text Inline Message