You could try,

if at(" ", id) = 0


>CHRTRAN() is for characters but it sounds as though the field is a character type since it allows non-digit characters and spaces. The ten digits (0 - 9) are characters as much as letters and punctuation marks.
>
>>Is the CHRTRAN() for character and not numbers? I am trying to use this for to check for an ID field that must have every number (and/or with a possibly characters) and must have no space in between. While testing, I could type all numbers, sometimes it works, sometimes not, and if I mix numbers with characters, sometimes it works, sometimes not, all that? This is what I have in my code:
>>
>>LEN(CHRTRAN(id," ",""))=8
>>
>>Chuck