/// <summary>
/// Modifies a blackboard variable.
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
private void ModifyBlackBoard(BlackBoardVars key, object value)
{
blackboard[key.ToString()] = value;
}
/// <summary>
/// Modifies a blackboard variable to be unset.
/// </summary>
/// <param name="key"></param>
private void ModifyBlackBoard(BlackBoardVars key)
{
blackboard.Unset(key.ToString());
}