QTR-Quadtone RIP

Great and promising new program for my alt photography palladium 
printing. Question: I'm doing my first linearization curve. I tried the 
L values from a scan and started as per instructions in the upper left 
with the L value for the lightest patch (95%). I continued through the 
21 steps ending with 4%. I entered each value as an absolute value, but 
when I tried to save, I got the error message that because the values 
were not increasing (well, I wasn't using the densinometer). So how do 
I enter these Lab color values?
Thanks,
Jim