Try
For the customer feild
if the Service Visit Report MASTER.xls is opened
    "Selection.Copy
    Windows("Service Visit Report MASTER.xls").Activate
    Range("B16:E16").Select
    Selection.PasteSpecial Paste:=xlPasteValuesAndNumberFormats, Operation:= _
        xlNone, SkipBlanks:=False, Transpose:=False"