Event add partition works but not the drop partition

[Frwa Onto]

We have set an event as below. What we notice is that the add partition is working well as we can see on a daily basis the partition list is growing but the drop partition is not work any reason for this? I have checked nothing in the log showing any error regarding to this event.

IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.PARTITIONS 
  WHERE TABLE_NAME = 'testPart1' AND PARTITION_NAME = 
  CONCAT(' p'
    ,   DATE_FORMAT( DATE_SUB( CURDATE(), INTERVAL 14 DAY ), '%Y%m%d' ))) THEN  
    SET @stmt := CONCAT(
        'ALTER TABLE testPart1 DROP PARTITION '
    ,   ' p'
    ,   DATE_FORMAT( DATE_SUB( CURDATE(), INTERVAL 14 DAY ), '%Y%m%d' ) 
    );
    PREPARE stmt FROM @stmt;
    EXECUTE stmt;
    DEALLOCATE PREPARE stmt;  
  END IF; 

  IF NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.PARTITIONS 
  WHERE TABLE_NAME = 'testPart1' AND PARTITION_NAME = 
  CONCAT(' p'
    ,   DATE_FORMAT( DATE_ADD( CURDATE(), INTERVAL 2 DAY ), '%Y%m%d' ))) THEN   
  SET @stmt := CONCAT(
        'ALTER TABLE testPart1 ADD PARTITION ('
    ,   'PARTITION p'
    ,   DATE_FORMAT( DATE_ADD( CURDATE(), INTERVAL 2 DAY ), '%Y%m%d' )
    ,   ' VALUES LESS THAN ('
    ,   TO_DAYS( CURDATE() ) + 2 
    ,   '))'
    );
    PREPARE stmt FROM @stmt;
    EXECUTE stmt;
    DEALLOCATE PREPARE stmt; 
  END IF;