<p>Hi,</p>
<p> </p>
<p>I've been looking a long time for a solution. Can someone please help me with the following:</p>
<p> </p>
<p>I have a birt report in which I have a crosstab. See attached image of how the data should be. What I want to do is substract <strong>SUB TOTAL A</strong> with <strong>SUB TOTAL B</strong> and present this in the <strong>Grand Total </strong>column. The problem is that the grand total does not have a substraction function.</p>
<p> </p>
<p>Any help would be appreciated.</p>
<p> </p>
<div> </div>
