VB Script to delete old DB backup files

I have a script that i used to delete old database back up files that are older than 3 days old and it works if it is in the same folder as the back ups but sems to delete itself once it is 3 days old the code is below. the Script is in this directory: L:\ and the back up files are located in L:\DB Backups

I am trying to run the script using windows scheduled tasks but it does not seem to be working and i can not figure it out the code is below. perhaps it is something in my scheduled task settings but as i said it worked when the file was in the same folder as the backups

Option Explicit
on error resume next
Dim oFSO
Dim sDirectoryPath
Dim oFolder
Dim oFileCollection
Dim oFile
Dim iDaysOld

'Customize values here to fit your needs
iDaysOld > 3
Set oFSO = CreateObject("Scripting.FileSystemObject")
sDirectoryPath = "L:\DB Backups"
set oFolder = oFSO.GetFolder(sDirectoryPath)
set oFileCollection = oFolder.Files

'Walk through each file in this folder collection.
'If it is older than 3 days, then delete it.
For each oFile in oFileCollection
If oFile.DateLastModified < (Date() - iDaysOld) Then
oFile.Delete(True)
End If
Next

'Clean up
Set oFSO = Nothing
Set oFolder = Nothing
Set oFileCollection = Nothing
Set oFile = Nothing

You should test the filename to make sure you're not deleting the script file itself.

I think that is what is happening. Is there some way that i can restrict the script to say:

if filename = delete_old_files.vbs then skip it?

Yes, pretty much just as you have it.

or to get rid of the other condition just...