>The properties on the class are availablle in runtime. The problem is compile time.
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I see. Not sure if this would help, but here is what I have for some of my properties and I can set them in design time

[Bindable(true, BindingDirection.TwoWay), Category("User-Defined")]

I'm not sure if I'm on the right track here or not, but may be worth a shot to explore.