New Post: NPOI and setCellFormula(): decimal-separator is cutoff

I've a serious problem copying this formula with NPOI 1.2.5 from one cell to another with C#:

The original cell contain this:

=IF(H21>(H23*0.9997);IF(H21<(H23*1.0003);"OK";"Errore");"Errore")

The resulting cell reports exactly this formula, but with the decimal separator stripped. So I get this:

=IF(H21>(H23*9997);IF(H21<(H23*10003);"OK";"Errore");"Errore")

This is my debugger view right after the setFormula():



Any help would be greatly appreciated.