Leviton Omnilink Unit Level

I am using the omnilink binding to connect to my HAI system. The binding seems to work without issues for setting dimmers, reading thermostats, etc. However, i cannot read the lighting level of a unit. my .items looks like this:
Dimmer Basement_Lights “Basement Lights [%d%%]” (Basement, Lights) {omnilink=“unit:35”}

This will control the light level, but will not show the current lighting level on the sitemap.