How to check if file exists in QTP

In below code , we check if a file  C:\sagar\abc.txt  exists
       

             Environment.Value("filepath") = "C:\sagar\abc.txt"

            Set Fo = createobject("Scripting.FilesystemObject")
            If Not Fo.FileExists(Environment.Value("filepath")) Then
                    print "File does not exist"
            Else
                    print "File does exist"
            End If



This is how we can check if a text file exists in QTP.