我该如何解决这个MDX问题？

Question

我想是比较以前和当前值，但我的MDX查询是给下面的错误

"The CURRENTMEMBER function expects a hierarchy expression for the 1 argument." 

我怎样才能解决这个问题？

我的MDX查询如下。请帮助

with member [Measures].[Growth] as ([Date].[Calendar].[Month].CurrentMember,[Measures].[Internet Sales Amount])-([Date].[Calendar].[Month].CurrentMember.PrevMember,[Measures].[Internet Sales Amount]) 
select 
{[Measures].[Internet Sales Amount],[Measures].[Growth] } 
on columns, 
{([Date].[Calendar].[Month].Members)} 
on rows 
FROM [Adventure Works] 

Answer 1

更改成员声明如下：

with member [Measures].[Growth] as ([Date].[Calendar].CurrentMember,[Measures].[Internet Sales Amount])-([Date].[Calendar].CurrentMember.PrevMember,[Measures].[Internet Sales Amount]) 

的CurrentMember函数作品掀起了hiearchy的。