修改A表单X字段的数值后，自动统计A表单列表中所有X数值之和并将该数值和立即更新到B表单中Y字段中

您好可以通过集成自动化结合API接口实现
1.创建表单编辑时触发的集成自动化

2.通过链接器封装查询表单实例数据接口 https://open.dingtalk.com/document/orgapp/querying-form-instance-data

3.调用封装好的链接器获取符合条件的数据

4.通过脚本节点遍历符合条件的数据并累加

var sumNumberField_lx2ts4gh = 0;
var sumNumberField_lx2ts4gi = 0;
var sumNumberField_lx2uklgt = 0;
// 遍历数据数组
for (var i = 0; i < data.length; i++) {
    var formData = data[i].formData;
    // 分别累加每个字段的值
    if (formData.numberField_lx2ts4gh !== undefined) {
        sumNumberField_lx2ts4gh += formData.进价组件唯一标识;
    }
    if (formData.numberField_lx2ts4gi !== undefined) {
        sumNumberField_lx2ts4gi += formData.调价组件唯一标识;
    }
    if (formData.numberField_lx2uklgt !== undefined) {
        sumNumberField_lx2uklgt += formData.售价组件唯一标识;
    }
}
outputs.add("进价和","sumNumberField_lx2ts4gh",sumNumberField_lx2ts4gh)
outputs.add("调价和","sumNumberField_lx2ts4gi",sumNumberField_lx2ts4gi)
outputs.add("售价和","sumNumberField_lx2uklgt",sumNumberField_lx2uklgt)

5.获取需要更新底表的数据并更新

实现效果：