title: how to get the value of another cell
body: <p>How can I get the value of a cell in another row ( for e.g. "F" and row() - 1) ?
  I want to concatenate two letters , for eg. F and 3 and then i need the value in F3.</p>
  
  <p>can anyone help ?</p>
  
  <p>Thanks in advance.</p>