links in treegrid

Is it possible to have a link in a treegrid cell? I have done this in the grid control but when I set the treegrid coltype to link, I receive an error message that link is not a valid column type.

Thank you

Hi,
please, make sure that you have added dhtmlxgrid_excell_link.js to your code.

<script  src="codebase/excells/dhtmlxgrid_excell_link.js"></script>

Thanks for your help. That did it.