Cool expression Sergey!

Pete, add the period if you have to deal with decimals <s>
empty(alltrim(Chrtran(mystring,"1234567890."," ")))

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>>Hi all,
>> I'm looking for a relatively easy way to identify if a character field contains only numbers. My application is testing for valid/real postal addresses and one of the checks I'd like to make is if the field contains nothing but numerical data. Can anyone point the way?
>>TIA,
>>Pete Adams
>
>Try:
>empty(alltrim(Chrtran(mystring,"1234567890"," ")))
>Returns .T. if all numbers