Modifying Standard BSP Appln

Hai all,

I want to modify some pages in the BSP Appln <b> HAP_DOCUMENT </b>.I hav copied

the std appl into zHAP_DOCUMENT.While copying i used my own package and everthing

works fine expect the PRINT button in the appln.

The std appl uses the package PAOC_HAP_DOCUMENT_UI.

Which one is better among 'copying the whole package' and 'Modying using SSCR'.but during upgradation to further releases...how this changes will effect ?

Rgds,

Jothi.