Filtering Fields in a Collection Template Based on Slug in Path?

I have a page that is displaying a Collection called Application.

In the collection template I want to output the relevant fields based on a slug in the current page path (the slug is named "techslug"). Is this possible and how do you do it if so?

This is what I have so far but it doesn't seem to filter the fields?

         <perch:if id="app_desc_biologics_card" value="{techslug}" match="contains">
            <perch:content type="textarea" id="app_desc_biologics_card" markdown="true" html="true" editor="markitup" />
         </perch:if>