>You will need a loop, something like

>For x=1 to getwordcount(bn,',')
>   tempbn=getwordnum(bn,x,',')
>   **your code here
>Endfor

FWIW, ALINES() is a much faster way to parse a comma-separated list. IIRC, it's a couple of orders of magnitude faster than using GetWordNum().

Tamar