How can i restrict a Content Search to Items with a specific column value?

Hi

I have been surfacing news articles based on a custom content type to a home page  using the new Content Search.   My content type has a mixture of standard site columns and managed terms. Now like the old CQWP, I want to filter on items that have Yes/No Site column value.

1. My Site Column is automatically added Managed Property with non editable attributes (Editable, Queryable etc) and can be viewed my SC: Search Schema
2. I can display it as one of the Property Mappings in the Web Tool Part panel
3. It shows  a “Yes” or “No” value under my rollup image
4. I then refine my query and can select the a property (site column) as I build up my query as in only return items when IsTheBestDayofWeekFridayOWSBOOL manual value equals “Yes”

 path:”http://MyPORTAL”  ContentTypeId:0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007048130EC3DB064584E21995537AF39*  IsTheBestDayofWeekFridayOWSBOOL=”Yes”

attempt to filter on my managed property does not show any of my articles  – I am assuming my syntax is wrong rather than the SIte column not in the index since it appears to be crawled.

How hard can this be!!!!!!