Get a first Value of the Table on the Page to display on header

I have below data

POSCODE      DESC       QUAN

1                         A               10

1                         A               20

2                         B                 34

2                         B                    42

2                         B                    43

Now the Table above has a conditional Break when the poscode changes. Now Posode 1 will appear on page 1 and Pocode 2 will appear on Page 2.

Now requirement is  that I need the print the POSCODE which appears in the table on the specific page , the value should be printed on the Header which exist on the page.

Please help me on this.

Regards,

Rajiv