``` title: "点击按钮锁定不可放入" size: 9 slots: '0-2': type: empty action: before: |- boolean lock = this.getTemp("lock"); if(lock) { player.sendOldMessage("界面已锁定"); return false; } return true; '3': type: button def: type: stone name: "&7未锁定" lore: - '&7点击锁定/解锁' action: left: |- boolean lock = this.getTemp("lock"); if(!lock){ this.setTemp("lock",true); this.getButton(3).setDisplayName("&7已锁定"); player.sendOldMessage("界面锁定"); }else{ this.setTemp("lock",false); this.getButton(3).setDisplayName("&7未锁定"); player.sendOldMessage("界面解锁"); } '4-8': type: button def: type: paper name: "&7填充物" ```