Webdynpro abap- navigation to context node

Hello all,

I am a new user for Webdynpro - abap. I was trying to set a default value to a input field. I am using WDDOINIT method for navigation to context node FLIGHTINFO. But i am not getting the exact idea behind the navigation at code level. Also not clear about get element at lead selection for context node FLIGHTINFO.

Please provide inputs in this case.

Thanks,

Yogesh