Does anyone know what commands to use to select a specific disc in the sony 400 disc dvd changer? I have the original remote and it seems all I can do to select a disc is walk up to it amd rotate the dial on the unit its self?

I have ALL the buttons learned into my pronto and want to make images of each movie send the disc location and start playing in the changer when pressed, I know I just link the image to send number commands but by using the remote to for example select disc 145, I press those numbers 1,4,5 and it tries to go to that chapter, not disc location?

Am I missing somthing?

Thanks!