Dynamic value help in ALV

Hello Experts,

I am new to abap UI programming. I want to use dynamic f4 help in ALV report. Can anyone explain in simple way to perform it either through OOP or function module?

Kindly explain using simple example excluding samples like: BCALV_TEST_GRID_EDIT_0, BCALV_EDIT_04 etc... I am expecting simple to understand samples.

Thanks in advance,

Viral.