Property Tab Builder & Equations - What is the secret?

I have been using properties for years, and using equations to set property values.  One of the ones I use (which will serve for this discussion because it is easy to duplicate) is Mat_Thk which I set to "Thickness", a global equation automatically created when you create a sheet metal part and it appears in the 'Value' drop down as Thickness@Part1.SLDPRT.  I use this to build material descriptions and populate notes, But no mater what I try I can't get the property tab to update automatically or at all it seems with the property value from the equation.  The traditional properties box shows the correct value, but the Property Tab shows the value name.  Nothing I do seems to effect an update.  What am I missing?

Keven

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