I think you are out of luck on this one. The work-a-round for it is to renumber the revisions to: 1.3.01, 1.3.02 ..... 1.3.10 Being a string value that's just the way it works. If it were a numerical value then you would have problems with the multiple decimal points.
Success is the ability to go from one failure to another with no loss of enthusiasm.
~ Winston Churchill ~