Device panel Roland SC88 Pro

After mucho web hunting I finally gave up looking and tried to create a device panel for the SC 88 Pro. Armed with my trusty Cubase tutorial PDF I cobbled together a simple device to allow me access to the following;

CC 0
CC 32
Prog Change

All works Ok but the program change parameter is the bind as it shows 1 less than the actual sound called up on the SC. For example; fingered bass is patch 34 but you need 33 on the panel. Is there a way to make a ‘1’ offset so that the numbers correspond? I tried setting the range as 1 - 128 instead of 0 - 127 but that didn’t work…

Thanks in advance,