Ableton Keytracking in Expression Controller

I'm using the Keytrack function in Expression Control (Max 4 Live essentials) to control the pitch of another signal. BUT, frustratingly, the output that the Expression Control device translates to is in a percentage form - i.e. between 0 and 100.



So now, the notes being played don't correspond with the notes being translated out from the device - the expression controller is splitting the keyboard up into 100 pieces, instead of the 88 on a keyboard. Any ideas on how to fix this?

Ableton Keytracking in Expression Controller