nooby question about the 1000 and yamaha dx7s

hey everyone, i know this probably has been asked a million times but noones answers seem to solve my problem, im using an mpc1000 with jjos2xl and a yamaha dx7s
im trying to record the synthesziers sound to my mpc through midi, it collects the data when i play it but no noise only notes on the grid, how do i get the sounds from the dx7s onto the mpc1000
thanks in advance

so should i do something like the midi "handshake" and connect with 2 cables or just use the record in to the line out of the synth and just record segments, i would have rather have played along but im not sure if its possible

thanks for the reply everythings working fine now! cheers!

midi in from dx to midi out of mpc, and midi out from dx to midi in of mpc
the only problem now is that when i assign samples to the first 6 pads of the mpc, the will also play when i go to a midi track on the mpc when i kit the lower keys of the synth, kinda annoying trying to avoid thoes, any solutions?