midi messages with ax synth as controller and integra 7 module (Roland)

hello,

im a midi newbie need some help.

when im connecting the ax synth to the integra 7 and switching sounds through the buttons on the ax synth, the buttons are directed to a specific place in the integra 7.

how i change that midi message on the ax synth to the specific place of sound that i want to use on the integra 7?

thanks in advance

Mike