Nested block position in model/paper space.

Hi,  I need to gather objects on a specivied layername within model_space in C#.

How do I add a fileter to my filtervalues to only grab model_space objects.

TypedValue

[] filterValues = new[] { newTypedValue((int)DxfCode.LayerName, LayerName.ToUpper()) };

SelectionFilter filter = newSelectionFilter(filterValues);

PromptSelectionResult foundBlocks = this.ed.SelectAll(filter);

SelectionSet currSS = foundBlocks.Value;

or

how to I check after I get the object and check the blockname

currEnt = (Entity)objID.GetObject(OpenMode.ForWrite);

if (currEnt.BlockName != "*Model_Space")

Please if someone could give me some guidence with the syntax.

thanks