Rental items for 15 days

[Kariton Revolution]

how to make rental items for only 15 days ??

[Emistry]

rentitem <itemid>,( 15 * 24 * 3600 );

refer rentitem

[Kariton Revolution]

Thankyou Emistry

[Kariton Revolution]

where i gonna put this? rentitem <itemid>,( 15 * 24 * 3600 );
itemdb?? 

[Capuche]

prontera,150,180,5	script	zesrdtghj	56,{
	rentitem <itemid>,( 15 * 24 * 3600 );
	end;
}

you can put it in a npc