BARCODE Printing in smartforms

Dear Experts,

Our client having a requirement of printing a barcode of type PDF 417 (2D).

I have created barcode format using SE73.

Now as i one dimentional barcode we used to concatenate the details then print barcode by assaigning that type to character format.

But as it is two dimentional ,what will be the procedure in order to print the same.

And how it is deifferent from other formats? and also it will be helpful if somebody give me the actual syntax for the same.

Thanks in advance.

With Regards,

Rajesh C.