Smarty template custom export type

[Merk46]

Hi guys, I've a problem with Smarty Template. What I'm doing right now is to export groups of data from an online tool called Formtools (www.formtools.org) via Smarty template. I've got a script who export data by colums, but I need to group some of that fields into another one completely different. How can I select all the columns I need and put them into another field?

This is the script:

[code]
{strip}

<export_datetime>{$datetime}</export_datetime>
<export_unixtime>{$U}</export_unixtime>
<form_info>
<form_id>{$form_id}</form_id>
<form_name></form_name>
<form_url>{$form_url}</form_url>
</form_info>
<view_info>
<view_id>$view_id</view_id>
<view_name>Dati preliminari</view_name>
</view_info>

{foreach from=$submissions item=submission name=row}

{foreach from=$display_fields item=field_info name=col_row}
{assign var=col_name value=$field_info.col_name}
{assign var=value value=$submission.$col_name}
<{$col_name}></{$col_name}>
</{$message}>
{/foreach}

{/foreach}


{/strip}[/code]