EREC-BSP-How to call a bsp application from another bsp application

Hi Experts,

In E-Rec one of my bsp application zapp_e_ext calling another standard bsp application hrrcf_searchhlp when user click on search help button.

i made a zcopy (zhrrcf_serchhlp) of std application hrrcf_searchhlp,and did some changes,

now the problem is how to replace the std application with zapplication so that zapplication should be called in place of std application when user click on search button.

Cheers,

Amod