Loop in a table

Hi BRF Experts,

Could any one please tell me how to do a loop on a table in brf+ and inside loop changing the content of it and finally display output.

I tried but did not success.

I need to implement following logic in BRF+

Loop for each entry in it_table.

if it_table-col2 = 0.

  it_table-col2 = it_Table-col1.

else.

  it_table-col2 = it_table-col3.

endif.

endloop.

This is the simple logic i want to implement in BRF+ but not able to get correct data. in fact i am getting blank output.

Any guideline please.

Thanks and regards,

Abhishek