Using VBA Adding an SDE for coverages layer to ArcMap

Public Sub AddSDECoverageLayer()
  Dim pWorkFact As IWorkspaceFactory2
  Dim pFWorkspace As IFeatureWorkspace
  Dim pFClass As IFeatureClass
  Dim pFLayer As IFeatureLayer
  Dim pMxDoc As IMxDocument
  Dim pMap As IMap
  Dim pAV As IActiveView
 
  'Open Feature Class
  Set pWorkFact = New SdeWorkspaceFactory
  Set pFWorkspace = pWorkFact.OpenFromString("server=swfcln;instance=5151;user=sde;password=sde;version=sde.default", 0)
  Set pFClass = pFWorkspace.OpenFeatureClass("cities")
 
  'Create new layer
  Set pFLayer = New FeatureLayer
  Set pFLayer.FeatureClass = pFClass
  pFLayer.Name = pFClass.AliasName
 
  'Add layer to map
  Set pMxDoc = ThisDocument
  Set pMap = pMxDoc.FocusMap
  Set pAV = pMap
  pMap.AddLayer pFLayer
  pAV.Refresh
End Sub