Run-time error 5: invalid procedure call or argument

[Chips96]

Hi All,

Thanks in advance for any assistance with this it's much appreciated.

When selecting through the different buttons of a slicer I am getting the error message: 'Run-time error 5: invalid procedure call or argument'

The below code is what is running and receiving this error, I have changed the font for the part which Excel is highlighting as the problem. Does anyone know why this error would appear and how I can fix it?

Private Sub UpdateSlicers(ByVal scDashboard As SlicerCache, ByVal scLetters As SlicerCache, ByVal scLac As SlicerCache)
    Dim siDashboard As SlicerItem
    
    scLetters.ClearAllFilters
    scLac.ClearAllFilters
    
    For Each siDashboard In scDashboard.SlicerItems
        If Not (scLetters.SlicerItems(siDashboard.Caption).Selected = siDashboard.Selected) Then
            scLetters.SlicerItems(siDashboard.Caption).Selected = siDashboard.Selected
            scLac.SlicerItems(siDashboard.Caption).Selected = siDashboard.Selected
        End If
    Next siDashboard
End Sub