check printing script debuggin problem

Hi

i am working on a check printing script. i need to adjust the layout of few things in this layout.

in the debuggin mode i am getting the short dump stating vendor number = xxxxxxxxxxxx (invalid).

can anyone tel me the windows for date,account payee,amount in words and amount in figures or atleast the fields related to them r tell me where i have to correct my script to proceed in debuggin mode.

thanks in advance