In China and English.for the people with poor reading English like me in mainland China
中英文对照，方便中国大陆英语和我一样差的人阅读。
1. Create a Variable named <input options> =""
1. 新建一个维度变量 input options=""
2.Create a Input Control, on variable <input options>, and input A B C
2.新建一个控件（Input Control）,关联到变量《input options》，输入 值 A B C
3.Create a Variable named < Rank USER >
3.新建一个维度变量 <Rank USER>
=If [input optins]="A" Then ([凭证中的过帐日期])
ElseIf [input optins]="B" Then ([总分类账账目])
ElseIf [input optins]="C" Then ([会计凭证编号])
4.In the Table , insert a column on the table left, input Variable < Rank USER >,
and Apply an ascending(descending) Sort to the column of Rank USER(you can hide the column )
4.在报表左边插入一列，输入数据是变量 《Rank USER》
并且根据需要做升序，降序的排序（可以隐藏此列）。
5.Using the input control, you can dynamically change which column is sorted.
5.点击控件选项即可实现用户自定义 的列排序
That's it. Thanks
Hope this works for you