IF Expression

System

I want to use an IF expression to see if the user has selected a radio button or if a value has been carried over from the dcr iterate. If not, then the file properties (extension, size, size flag kb or mb) will not be displayed. This is an optional field.

<iw_if expr="{iw_value name='docresults.File Type/'} ne '' "> (single quote, single quote and dbl quote on the end).
<iw_then>
<span class="footer">
(<iw_value name='docresults.File Type' />,
<iw_value name='docresults.File Size' />,
<iw_value name='docresults.File Value' />)
</span><br><br>
</iw_then>
</iw_if>