iterating through a web table with unique values for each cell and punching the data using for loop

I am new to Test complete and automation and below might be a very simple and dump question. Please help me

How can i iterate through a table like below which has a unique name for each cell (textboxModel , textboxModel1, textboxModel2,textboxModel3)

I used 'for loop' as below, but it keeps rewriting the data on the same cell and doesn't update the data in other text cells.