[squidsk]

If you're trying to do something in a template then just put the condition part of the if statement in the quotes of the condition attribute of the if tag otherwise.

<if condition="$_REQUEST['do'] == 'action'">
<else />
<endif>

Of course your template would be far neater if you set a the value you wanted output in the script (based on the condition) and then just had the template output the final value.