compare numbers -need help-

hi all

this is a part from program update code

it must check a file size from a download link and compare it to test.exe that contain the size of another file in bytes

Local $nSize = InetGetSize("http://www.autoitscript.com/autoit3/files/beta/update.dat")

If FileExists("test.txt") Then


Local $file = FileOpen("test.txt", 0)

While 1
    Local $line = FileReadLine($file)
    If @error = -1 Then ExitLoop
WEnd

FileClose($file)
Endif




If $nSize == $line Then
  MsgBox(4096,"","Matched!")
Else
  MsgBox(4096,"", "The strings did not match!")
EndIf

i am new to autoit and this code always give "The strings did not match" even if they're the same "445"

any ideas ?