AFDKO, error occured on microsoft font validator


Dear buddies

Some time ago I had tested trying to build a font using makeotf-afdko
(Font, Version 1.002;PS 1.001;hotconv 1.0.57;makeotf.lib2.0.21895 DEVELOPMENT)
All of supporting data required has been edited from the source file example Adobe "minionpro". The process of generating fonts was successfully and font can be used at least in windows xp. But after I checked this font microsoft font validator, there are some pretty annoying error messages as follows:

into file: feature size
actually I haven't yet understand about the values of parameter, So I put them with random value, and It is succesfully generating error into Microsoft Font Validator (MFV) reviews :)

feature size {
parameters 150 3 65 84;