Index of Markers

[Kgrace4715]

I have an index of markers that I am having an issue with.  I would have thought that sort order, by default , would allow my numbers to sort in the following fashion; 5, 7, 9, 10, 11, 15. Instead it is doing 10, 11, 15, 5, 7 and 9.  To me it appears that framemaker is instead looking at the fist digits.  Does  anyone know how to change the index sorting to give me the correct results?

K. GRACE
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