PowerPivot Slicer selection based on cell value us

Question

I'm having some issues in automating a PowerPivot slicer using vba. What I am trying to do is have the slicer update and only select what is in a certain cell.

So for example assuming the cell was J3 then whatever was typed in J3 that's what would get updated in the slicer.

My values in my slicer are just numbers. The code I currently have (which doesn't work) throws a run time error is below. The formula name of the slicer is "Syndicatenumber" and the cell I would like it to look at and then update is cell J3.

Anythoughts/help would be much appreciated.

Many thanks

 Public Sub Worksheet_Change(ByVal Target As Range)
    Dim SI As SlicerItem
    Application.EnableEvents = False
    If Not Intersect(Target, Range("J3")) Is Nothing Then
        With ActiveWorkbook.SlicerCaches("Slicer_Syndicatenumber")
            .ClearManualFilter
            For Each SI In .SlicerItems
                SI.Selected = UCase(SI.Value) = UCase(Range("J3").Value)
            Next SI
        End With
    End If
ExitSub:
    Application.EnableEvents = True
End Sub