public function actionSet ($name, $value, $description = null)
		{
			$class = $this->_modelClass;
			$object = $class::find()->where([ 'name' => $name ])->one();
			if ($object == null)
			{
				Console::printColor('Setting not found.', 'red');
				Yii::$app->end();
			}
			else
			{
				$object->value = $value;
				if (!is_null($description))
					$object->description = $description;
			}
			$object->save();
			$this->actionList();
		}