MySql trigger how to check that a field is set when updating?

Question

MySQL

Hello.
I am writing a trigger for mysql to update a record. To determine the validity of the original data, you need to make sure that certain fields are specified in the update operation:

CREATE TABLE dbcv.cv_translates (
  id bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'id записи в таблице (ключ)',
  cv_users_id bigint(20) UNSIGNED NOT NULL COMMENT 'id пользователя',
  translate_description varchar(255) DEFAULT '' COMMENT 'Наименование языка (не обязательно)',
  json_version bigint(20) NOT NULL COMMENT 'версия. Обязательно сравнивать перед записью и инкриментировать после записи (выполняется триггером)',
  json_data json NOT NULL COMMENT 'Данные резюме',
  json_history json DEFAULT NULL COMMENT 'История изменений записи json_data',
  date_create timestamp NULL DEFAULT NULL COMMENT 'Дата создания резюме',
  date_update timestamp NULL DEFAULT NULL COMMENT 'Дата изменения',
  PRIMARY KEY (id),
  UNIQUE INDEX UK_cv_translates_id (id),
  CONSTRAINT FK_cv_translates_cv_users_id FOREIGN KEY (cv_users_id)
  REFERENCES dbcv.cv_users (id) ON DELETE NO ACTION ON UPDATE NO ACTION
)
ENGINE = INNODB
AUTO_INCREMENT = 142
AVG_ROW_LENGTH = 93485
CHARACTER SET utf8
COLLATE utf8_general_ci
COMMENT = 'Таблица данных с переводами резюме пользователей'
ROW_FORMAT = DYNAMIC;

Trigger:

CREATE 
  DEFINER = 'root'@'localhost'
TRIGGER dbcv.cv_translates_trigger_update
  BEFORE UPDATE
  ON dbcv.cv_translates
  FOR EACH ROW
BEGIN
  if( NEW.json_data!=OLD.json_data) THEN
    if( NEW.json_version != OLD.json_version ) THEN
        SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Ошибка сохранения резюме. Версии данных должны совпадать. (триггер cv_users_trigger_update)';
    END if;
    SET NEW.json_hash=SHA1(NEW.json_data);
    SET NEW.json_version = OLD.json_version+1;
    SET @j = JSON_SET( '{}', '$.json_data', NEW.json_data, '$.json_version', NEW.json_version, '$.json_data_updated', DATE_FORMAT(NOW(), '%Y-%m-%d %T'));
    SET NEW.json_history = JSON_MERGE(OLD.json_history, @j);
    SET NEW.date_update = NOW();
  END if;
END

The question revolves around the UPDATE operation:

UPDATE dbcv.cv_translates SET json_data=?, translate_description=? WHERE id=?;

You need to throw an error if the user did not specify the json_version field in the update request . I assume that the condition should be inserted into the trigger in the line "if( NEW.json_version != OLD.json_version ) THEN". But I'm not exactly sure if there is even an opportunity to check such a condition. Currently, if the json_version field is not set, then everything works like NEW.json_version == OLD.json_version .
Question - is it possible to check that the json_version field is set explicitly in the UPDATE request?