fpdf alignment of cells

I'm trying to generate a PDF using fpdf and I'm having a small problem

I need to have 2 cells, like the following:

-------------------------  -------------------------
|  Address Line 1          |       Version         |
|  Address Line 2          |         1.0           |
|  City                    |       06/05/2011      | 
-------------------------  -------------------------

I've tried using MultiCell() but with no luck.

$address = '
    Address Line 1
    Address Line 2
    City
    Postcode';
$pdf->MultiCell(133.5, 2.7, $address, 'L', 'L');

$version = '
    Version 
    1.0
    06/05/2011';
$pdf->MultiCell(53.5, 2.7, $version, 'R', 'R');

I thought that I could possibly set the 'float' as it was left or right, which is what the docs say, but this doesn't seem to work. It just lists the Version multicell below the address and not to the right of it.

Does anyone have any idea why this would be?

Thanks