1.  Go to the machine where Advanced Printer Control is installed.
2.  Go to Start > Programs > Advanced Printer Control > Form Setup.
3.  Login into Form Setup.
4.  Double click your Form from the list.
5.  Click on the Design button.  This will bring up the design of your form.
6.  Right click on the MICR line for your Bank Account number and select Properties.
7.  Modify the bank number in the Update Control text box .
8.  Click OK.