Thanks all of you for a quick reply and very professional way in our VFP forum. It works great.

But this is only the beginning of the story, why ? because someone gave me
an excel sheet exactly with the same question. Maybe I ask to the wrong forum to convert your wonderfull codes into VBA to do the same thing, then my headache will be absolutely over because I am newbie for Excel-VBA.

Please do the impossible for me, really appreciated for any help you have
provided so far.
TIA