IF循环检查VBS中是否存在文件

Question

我正在做一个实验室，说明书要检查文件是否存在。它建议使用布尔值Not来完成它。

这是我的代码，但无论我做什么，我都无法超越循环的结束。我一直收到错误消息，指出该文件不存在。

Const Read = 1, Write = 2, Append = 8, ASCII = 0

FileName  = "C:\users\gryphon\IP_Addresses.csv"
ipAddrStr = ""
NewRoom   = 106
Comp1_IP  = "192.168.10.59"
Comp2_IP  = "192.168.10.60"
Comp3_IP  = "192.168.10.61"
Comp4_IP  = "192.168.10.61"

Set fso = CreateObject("Scripting.FileSystemObject")

ipAddrStr = CStr(NewRoom) & "1," & CStr(Comp1_IP) & CStr(NewRoom) & "2," & _
            CStr(Comp2_IP) & CStr(NewRoom) & "3," & CStr(Comp3_IP) & _
            CStr(NewRoom) & "4," & CStr(Comp4_IP)

If Not fso.FileExists("FileName") Then
  WScript.StdOut.WriteLine(Chr(7) & Chr(7))
  WScript.Echo "File Does Not Exist." & vbCrLf & _
    "You Must Create the File Before You can Read the File."
  WScript.Quit
End If

我做错了什么，我该如何解决？这必须由04DEC2016在太平洋标准时间晚上11点完成。我上周一请求我的导师帮忙，我还在等待回复。