PHPexcel CONCATENATE makes blank column
<p>i have this commands, other columns has its data, but I2 is empty, no function, nothing
i think im donig something wrong, but dont know what.
thanks</p>

<p>in I2 is this data "2012/10"</p>

<pre><code>$foo-&gt;mergeCells("B$rowCounter:E$rowCounter");
$foo-&gt;setCellValue("B$rowCounter", "Lukáš Doubek")
    -&gt;setCellValue("F$rowCounter", "IČ: 77889977")
    -&gt;setCellValue("H$rowCounter", "Variabilní symbol")
    -&gt;setCellValue("I$rowCounter", '=CONCATENATE("LEFT(I2;4)","RIGHT(I2;2)")');
$rowCounter++;
</code></pre>
