I'm wanting to label polygons on a map that are above a certain area. ie If polygon is more than 160 sq m label it. I'm doing this using;

    $area => 160

But nothing is being returned. The table has no specific area column but is comprised of polygons. On the fly transforms are enabled with all the source data in WGS 84 projected to a local national grid. The project CRS area is set to square metres as discussion in comments below. 

What am I doing wrong?