Skript a mysql

Witam, mam problem z mysql w skript mianowicie "the 2nd argument given to the function eat is not of the required
 type number" a kod: 

	script options:
    $ db url jdbc:mysql://(ip xd):3306/rank
    $ db username x
    $ db password x
    
    
on script load:
    update "CREATE TABLE IF NOT EXISTS `rank` (`uuid` varchar(255),`name` varchar(255), `distance` float(20), `kills` int(20), `eat` int(20))"
    
    #po pierwszym starcie dodaj # przed 2 linie ponizej
    update "ALTER table `rank` ADD id int NOT NULL AUTO_INCREMENT primary key FIRST"
    update "ALTER table `rank` ADD UNIQUE (id, uuid)"
    
	 
	function eat(target: offline player, a: number, s: integer):
    set {_result::*} to objects in column "eat" from result of query "SELECT eat FROM rank WHERE uuid = '%uuid of {_target}%'" and close
    if "%{_result::*}%" is "<none>":
        update "INSERT INTO cash (`uuid`, `amount`, `name`) VALUES ('%uuid of {_target}%', '0','%name of player%')"
    else:
        set {_targetamount} to "%{_result::*}%" parsed as number
        add {_a} to {_targetamount}
        {_s} is 0:
            update "UPDATE rank SET `eat` = '%{_targetamount}%' WHERE uuid = '%uuid of {_target}%'"
            stop
        else:
            update "UPDATE rank SET `eat` = '%{_a}%' WHERE uuid = '%uuid of {_target}%'"
            stop
on join:
    set {eat::%player%} to 0
    
	on first join:
    set {eat::%player%} to 0

on eat of golden apple:
    add 1 to {eat::%player%}
    
on quit:
    set {_e} to {eat::%player%}
    eat(player,"%{_e}%",0)
	

mam też error "database features are disabled until the script has sql credentials associated with it."