Return an array of objects within a specified layer

My goal is to loop through a single layer and modify the text of a Note.  I thought that the GetEntities method would enable me to do this, but it isn't working as expected.  Below is the relevant part of my code and I was expecting the number of returned objects to be 13 but the method had returned an array containing every note within the entire drawing.  Any thoughts on where I am going wrong?

                    'Build Draftsight interfaces
                   Set dsModel = dsDoc.GetModel()
                   Set dsSketchMgr = dsModel.GetSketchManager()
                   Set dsSelectionMgr = dsDoc.GetSelectionManager()
                   Set dsSelectionFilter = dsSelectionMgr.GetSelectionFilter()
                   
                   'Create objects
                   Dim aNote As DraftSight.Note
                   Dim entityItem As Variant
                   Dim entityTypes As Variant
                   Dim entityObjects As Variant
                   Dim layerEntity(0) As String
                   
                   'Add layer name to an array
                   layerEntity(0) = dsDoc.GetLayerManager.GetLayer(layerName).Name
                   
                   'Clear selection filter, get only Notes, apply filter
                   dsSelectionFilter.Clear
                   dsSelectionFilter.AddEntityType dsObjectType_e.dsNoteType
                   dsSelectionFilter.Active = True

                   'Get all entities within specified layer
                   dsSketchMgr.GetEntities dsSelectionFilter, layerEntity, entityTypes, entityObjects
                   
                   'Loop through all the note entities in that layer and see if any match the one in the current record
                   For Each entityItem In entityObjects
                       Set aNote = entityItem
                       Debug.Print UBound(entityObjects)
                       
                       Debug.Print LBound(layerEntity) & ":" & UBound(layerEntity) & vbTab & layerEntity(0)
                       Debug.Print aNote.Handle & vbTab & aNote.Layer & vbTab & aNote.Text
                       
                       If aNote.Handle = testHandle Then
                           handleFound = True
                           Exit For
                       End If
                       
                   Next