ajaxToolkit: NumericUpDownExtender providing dynamic values

So I have the ajaxToolkit: NumericUpDownExtender on my web form. Something like this

1 visit     To ===>   4 visit

5 visit     To===>    9 visit

10 visit    To===>   ~More

So based on what they choose for the "4 visit" ajaxToolkit NumericUpDownExtender I'd like to dynamically control the second line and the "5 visit"...so instead if they choose "3 visit" on the first line, the first column on the second line would then be"4 visit"...etc...I don't need the literal "visit"...So if it means setting a minimum value and incrementing based on the previous <tr> Row, that's fine.

Can someone please help me with this?

Thanks in advance for your review and am hopeful for a reply.

PSULionRP