>>>

>>>#DEFINE allowedChars "0123456789"
>>>myValue = "111j11"
>>>? EMPTY(LEN(CHRTRAN(myValue, allowedChars, "")))
>>>

>>
>>Isn't the EMPTY(LEN()) a bit redundant?
>>
>>Just EMPTY(CHRTRAN(myValue, allowedChars, "")) should be sufficient.
>
>Not so Fred,
>
>test it with '1234' and '12 34'
>

>EMPTY(CHRTRAN('12 34', allowedChars, "")) && TRUE
>EMPTY(len(CHRTRAN('12 34', allowedChars, ""))) && FALSE
>
>ie empty(space(4)) = TRUE
>

>Note that if the arguement of empty() is a Memo containing space(4), it will return FALSE whereas a char field of space(4) would return TRUE

Given the example, it was OK. The example was not fully representative of potential situations.