slette fil via ASP

jeg har dette kode:

<%
Set MyFileObject = Server.CreateObject(\"Scripting.FileSystemObject\")
Set MyFolder = MyFileObject.GetFolder(\"C:\\Inetpub\\wwwroot\\statsServer\\logs\")

i = 0

FOR EACH thing in MyFolder.Files
    Set myfile = MyFileObject.GetFile(thing)
    size = myfile.Size
    if size > 20000 THEN   
        myfile.DeleteFile
    END IF
NEXT
%>

men jeg får denne fejl:

Error Type:
Microsoft VBScript runtime (0x800A01B6)
Object doesn\'t support this property or method: \'myfile.DeleteFile\'
/statsServer/deletesmalllogs.asp, line 11

Hvorfor er det lige at det ikke virker ??