Misson planner connect to realflight 7.5

hi,I have successful set up simulation with xplane11 that connect to mission planner use SITL .To simulate more real ,I think the best simulator is realflight.so I follow the instruction in audupilot website ,it’s say that in order to connect to mission plannner we have to use at least realflight 8,but I found some video in YouTube ,and it’s operated in the realflight 7.5.
do any one know how to connect to mission planner with realflight 7.5 rather than realflight 8 for simulation ?

nobody answer​:joy::joy: