Freemarke, printing number with no commas

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I have a hyperlink in a form that passes a numeric value to a bash script.
the link is like:

<hyperlink ... target="showEntries?partyId=${partyId}&amp;days=${days}" />

If you mouse over the link, the days variable is coming out like
3,313,222,978

This used to be displayed without the commas.

I tried ${days?c}, ${days?string.computer}, and ${days?string('0').

All these options display nothing for the day parameter.

Anyone have an idea on what I can try to get these commas out?

Thanks

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