我已经在管理中创建了一个插件，我想将带有车辆的manyToMany产品插入到Shopware 6数据库中。从下面的代码中，我尝试将'92961afbc50e4380b3af86b257630ade'插入到'vehicles_product'表的'product_id'列中：

import template from './sw-vehicles-import.html.twig';

const { Component, Mixin } = Shopware;

Component.register('sw-vehicles-import', {
    template,
    inject: ['importExport', 'repositoryFactory', 'feature'],

    mixins: [
        Mixin.getByName('notification'),
    ],

    metaInfo() {
        return {
            title: this.$createTitle()
        };
    },

    data() {
        return {
            importFile: null,
            repository: null,
            entity: undefined,
        };
    },
    
    computed: {
    },
     
    created() {
        this.repository = this.repositoryFactory.create('vehicles');
    },

    methods: {
        onStartProcess() {

            this.entity = this.repository.create(Shopware.Context.api);

            this.entity.categoryFilter = 'CategoryName';
            this.entity.featureFilter = 'FeatureName';
            this.entity.products.productId = '92961afbc50e4380b3af86b257630ade';

            this.repository.save(this.entity, Shopware.Context.api);
        }
   }
});

构建过程不起作用，我做错了什么？你能帮帮我吗？