Dim FilterType(0) As Integer Dim FilterData(0) As Variant 'FilterType(0) = 0 'Indicates filter refers to an object type 'FilterData(0) = "Circle" 'Indicates the object type is "Circle" 'Specify a single selection criterion for a selection set '0 Object Type (String) Such as “Line,” “Circle,” “Arc,” and so forth. '2 Object Name (String) The table (given) name of a named object. '8 Layer Name (String) Such as “Layer 0.” '60 Object Visibility (Integer) Use 0 = visible, 1 = invisible. '62 Color Number (Integer) Numeric index values ranging from 0 to 256. ' Zero indicates BYBLOCK. 256 indicates BYLAYER. A negative value indicates that the layer is turned off. ' 67 Model/paper space indicator (Integer) Use 0 or omitted = model space, 1 = paper space. 'For a complete list of DXF group codes, see Group Code Value Types in the DXF Reference. '
http://www.autodesk.com/techpubs/autocad/acad2000/dxf/group_codes_in_numerical_order_dxf_01.htm 'The filter arguments are declared as arrays. The filter type is declared as an integer and the filter value as a variant. Each filter type must be paired with a filter value. Dim sstext As AcadSelectionSet Set sstext = ThisDrawing.SelectionSets.Add("SS2") 'FilterType(0) = 8 FilterType(0) = 8 FilterData(0) = "*BASI" sstext.Select acSelectionSetAll, , , FilterType, FilterData or Dim PT1(0 To 2) As Double Dim PT2(0 To 2) As Double sstext.Select acSelectionSetCrossing,PT1 ,PT2 , FilterType, FilterData if you want select more object inside the crossing selection point PT1 and PT2 I hope this can helps you as starting point to develop your code.