Zmiana trade villagerów

Witam,  mam pytanie czyj jest możliwość w jakiś sposób zmienić itemy które kupują villagerowie oraz za co my musimy je kupić widziałem "Random Sk" ale tam wyskakuje mi taki błąd:

21:48:11 [SEVERE] 'trade' is not a number (skywars.sk, line 32: clear trade of event-entity')21:48:11 [SEVERE] 'entity with 9999999999 max uses' is not a type (skywars.sk, line 33: add trade items 64 stone and 64 stone for diamond to event-entity with 9999999999 max uses')21:48:11 [SEVERE] 'entity with 9999999999 max uses' is not a type (skywars.sk, line 34: add trade items diamond for 64 stone to event-entity with 9999999999 max uses')

kod:

on spawn of villager:	wait 1 tick	clear trade of event-entity	add trade items 64 stone and 64 stone for diamond to event-entity with 9999999999 max uses	add trade items diamond for 64 stone to event-entity with 9999999999 max uses