>Dear Naomi
>
>May you did not read my qeustion carefully.
>
>Text1 has Numeric data type but in property sheet it has no Input mask or format.
>
>If user writes 1234 then comma automatically displayed as 1,234 (before pressing enter)
>If user write 12345 then comma automatically displayed as 12,345 (before pressing enter)
>If user write 123456 then comma automatically displayed as 1,23,456 (before pressing enter)
>If user write 1234567 then comma automatically displayed as 12,34,567 (before pressing enter)
>
>and so on as 12,34,56,789
>
>I hope now the point is more clear

And what if the user press comma just between 12 and 34?