Error: 0 in method ADDLINE()

SOLVED

Hi Forum,

Is there a reason on why when i set the CusotmerPONo in a BOI script , I am getting Error: 0 in method ADDLINE() ?.

Here is my line of code.  I have the same line of code on other scripts and work fine, although the script is reading a MySQL db table and i am reading a tab delimited TXT file in this script.

 r =  o.nSetValue("CustomerPONo$", sPONum)

Any clues ?

Regards, 

Manuel