需求：分录的物料F7需要修改默认的分类标准，如下图

方法如下：
1、添加F7打开前事件

2、编写代码

代码：

beforeOpen:function(options){        		
		waf(options.target).wafPromptSpecial_Material("option","lastGroupStandard","aVgJygEgEADgAABEfwAAAZeb4R8="); 
			waf(options.target).wafPromptSpecial_Material("option","treeRoot",{
                                   		                                                              id : "aVgJygEgEADgAABEfwAAAZeb4R8=",
                                  			                                                      name : "全部",
                                    		                                                              isParent : true,
                                    			                                                      isRoot : true,
                                    			                                                      standardType : 0});
        }

效果：

表头物料F7修改可参考：https://wenku.my7c.com/article/290448426498345216?productLineId=8