Incorrect formatting when using #,##0 format

[sergiocapozzi77]

Hi, I'ma having a problem using the formatter: #,##0

In C#:
string.Format("{0:#,##0}", 0) ---> 0
string.Format("{0:#,##0}", 68) ---> 68

In the library:
format('#,##0', 0) ---> ,000
format('#,##0', 68) ---> 68,000