Sub GetValueMyCloseFile()
Dim ThePath$, NameWB$, ShName$, MyCel$, MyValue$
    ThePath = "/Users/UserName/Downloads/"
    NameWB = "Exemple.xlsx"
    ShName = "TOTO"
    MyCel = "A3"
    
    MsgBox GetValueInCloseFile(ThePath, NameWB, ShName, MyCel)
    
End Sub
Function GetValueInCloseFile(ThePath$, NameWB$, ShName$, MyCel$)
Dim MyValue$
    MyValue = "'" & ThePath & "[" & NameWB & "]" & ShName & "'!" & Range(MyCel).Address(True, True, xlR1C1)
    GetValueInCloseFile = ExecuteExcel4Macro(MyValue)
End Function