@classmethod
def _powershell_script_order_reverse_conversion(cls, val, **kwargs):
    """
        converts powershell script GUI strings representations to
        True/False/None
        """
    if val.upper() == 'Run Windows PowerShell scripts first'.upper():
        return 'true'
    elif val.upper() == 'Run Windows PowerShell scripts last'.upper():
        return 'false'
    elif val is 'Not Configured':
        return None
    else:
        return 'Invalid Value'
