>I'm sorry
>
>I try generate this when I pass this string
>
>ADT MEX AV BOG515.00Y AV MEX515.00Y NUC1030.00END ROE1.00AV
>
>the regex.ismatch have equal to true.
>
>Thanku.

What is wrong with Regex.IsMatch? This works for me:

lcString="ADT MEX AV BOG515.00Y AV MEX515.00Y NUC1030.00END ROE1.00AV"
lcString2="AV BOG515.00Y AV MEX515.00Y"

MsgBox(Regex.IsMatch(lcString, lcString2))   'returns TRUE

Please, show your code exactly, and show what line does not work as you expect.