Excel formulas are not refreshing after programmatically changing data with OpenXML
<p>I have created a .net component for working as a function in excel. They r working fine. </p>

<p>but some time if i update <code>colA2</code> and <code>colH2</code> and result will come in <code>colK3</code>. and after modification in <code>colK3</code>, the value of <code>colM3</code> is changed because there is a function <code>colM3=sum(colK3,colA2)</code>.
but the value of <code>colP2</code> is not updating <code>colP2=getequivaent(colM3,colH2 )</code>. getequivalent is our .net component add-in for excel, it is working properly. </p>

<p>if i press <code>ctrl + alt + F9</code>, the formulas update. But i cannot explain my customer to update his formulas manually every time. why it is not updating after modification in support columns.</p>
