Clearing Files in User Temp Folder as Non Admin

Good afternoon,

Does anybody know which security setting would allow a user to delete files from their Temp Folder?

I have tried changing the below System and Application Security Roles with no luck. Each time i get an error saying the User does not have permission to write to that folder.

Private Sub ClearUserTempFolder(ByVal si As SessionInfo)
    Try
        Dim userName As String = si.UserName.Replace(" ", "")
        Dim location As FileSystemLocation = FileSystemLocation.ApplicationDatabase
        Dim folderPath As String = $"Internal/Users/{userName}/Temp"
        Dim fileTypeFilter As XFFileType = XFFileType.All
        Dim contentFileExtensionFilters As List(Of String) = Nothing

        ' Get list of files
        Dim objList As List(Of XFFileInfoEX) = BRApi.FileSystem.GetFilesInFolder(si, location, folderPath, fileTypeFilter, contentFileExtensionFilters)

        If objList IsNot Nothing AndAlso objList.Count > 0 Then
            For Each file In objList
                Try
                    BRApi.FileSystem.DeleteFile(si, location, file.XFFileInfo.FullName)
                    BRApi.ErrorLog.LogMessage(si, $"Deleted file: {file.XFFileInfo.FullName}")
			Catch ex As Exception
				Throw ErrorHandler.LogWrite(si, New XFException(si, ex))
			End Try            
		Next
        Else
            BRApi.ErrorLog.LogMessage(si, $"No files to delete in {folderPath}")
        End If

			Catch ex As Exception
				Throw ErrorHandler.LogWrite(si, New XFException(si, ex))
			End Try
End Sub