Thanks Howard! That works a treat..

Did some digging through some old code and found:
Code:

;Function	ISNUMERIC()
;Author		Kent Dyer (leptonator@hotmail.com)
;Action		Check for a numeric value
;Syntax		ISNUMERIC("value")
;Version	1.0
;Date           09 - March - 2004
;Date Revised   09 - March - 2004
;Parameters 	value 
;		Value to test for
;Remarks	This is a simple check for a numeric value.
;Returns	Check for the value being a numeric
;Dependencies 	None
;KiXtart Ver	4.02
;Example(s)	?ISNUMERIC('123342334')
;               ?ISNUMERIC('test')
; 
?ISNUMERIC('-123342334')
?ISNUMERIC('123342334')
?ISNUMERIC('test')
get $
FUNCTION ISNUMERIC($val)
 DIM $i,$res[1],$result
 IF CINT($val)
    $res='Integer'
  ELSE
    $res='nonInteger'
  ENDIF
    $ISNUMERIC=$res
ENDFUNCTION


Kent
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