def METHOD_NAME(table, sys_id, field, value):
    """
    Update the value of a record's field in a servicenow table
    :param table: The table name, e.g. sys_user
    :type  table: ``str``
    :param sys_id: The unique ID of the record
    :type  sys_id: ``str``
    :param field: The new value
    :type  field: ``str``
    :param value: The new value
    :type  value: ``str``
    CLI Example:
    .. code-block:: bash
        salt myminion servicenow.update_record_field sys_user 2348234 first_name jimmy
    """
    client = _get_client()
    client.table = table
    response = client.update({field: value}, sys_id)
    return response