/* 4. Change the value of the msg variable */
msg = 4321;
/* 5. Send it back as payload of a pong message to the expeditor */
TRY {
gras_msg_send(expeditor, "pong", &msg);
/* 4. Change the value of the msg variable */
msg = 4321;
/* 5. Send it back as payload of a pong message to the expeditor */
TRY {
gras_msg_send(expeditor, "pong", &msg);