Re: view filter

I got it:

ElementId paramId_base = new ElementId(BuiltInParameter.SCHEDULE_BASE_LEVEL_PARAM);
ElementId paramId_top = new ElementId(BuiltInParameter.SCHEDULE_TOP_LEVEL_PARAM);

and its not BuiltInParameter.FAMILY_BASE_LEVEL_PARAM or BuiltInParameter.FAMILY_TOP_LEVEL_PARAM.

Holy cow.

Christian