BQ27510 Dataflash Programming

Hello,

I want to read and write the flash in production like described in SLUA449 with a visual basic program. There are diagrams explain the way to read and write the flash at the beginning of page 9 in SLUA449. I have tried to implement this but it doesn't work.
If there´s a code example for the BQ27510 for visual basic for reading and writing the flash?

Thank You

Regards Eckart