Change sample pitch/speed on the RMX-1000 & Remixbox

Hey guys, just wondering can you actually change the speed of a sample in remixbox or the RMX-1000? I have loaded afew samples onto a SD card and where you export it on remixbox it says you can change the pitch. When i change it from say 138 to 140 it is the same speed when loaded into the RMX and played back. Anyone know what I am doing wrong? Major feature I want to get working :(