What is wrong with this trigger in mysql?

Question

Hi all,

Below is trigger that I need to create but It is not getting created.Please any buddy can explain me what is wrong with this trigger ? Help me please.

DELIMITER $$
 CREATE TRIGGER property_history_update 
 AFTER UPDATE ON `properties`
 FOR EACH ROW BEGIN

 IF OLD.ListPrice != NEW.ListPrice THEN  
    INSERT INTO `property_history` 
      SET ListingKey = OLD.ListingKey,
           ListPrice = NEW.ListPrice,
       ListingStatus = OLD.ListingStatus,
     LastUpdatedTime = NEW.LocalLastModifiedOn;
 END IF;

END$$
DELIMITER ;

When I executed above trigger I got error as below :

Fatal error: Maximum execution time of 300 seconds exceeded in /var/www/phpmyadmin/libraries/import/sql.php on line 99