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如何编写表达式以将ssrs中的两个字段相减?

[英]How can I write expression to take an subtraction of two fields in ssrs?

I'm working on SSRS report. 我正在研究SSRS报告。

There are two main fields CurrentMV and PreviousMV . 有两个主要字段CurrentMVPreviousMV

field CurrentMV having expression =Sum(Fields!CurrentMV.Value) 字段CurrentMV具有表达=Sum(Fields!CurrentMV.Value)

field PreviousMV having expression =Previous(Sum(Fields!CurrentMV.Value)) 字段PreviousMV具有表达=Previous(Sum(Fields!CurrentMV.Value))

I'm having another field on report MTM which is nothing but difference between 我在报表MTM上有另一个字段,不过

CurrentMV- PreviousMV How can I write expression for MTM as there is already expression used in CurrentMV and PreviousMV CurrentMV- PreviousMV如何为MTM编写表达式,因为CurrentMVPreviousMV已经使用了表达式

please help me. 请帮我。

=Sum(Fields!CurrentMV.Value) - Previous(Sum(Fields!CurrentMV.Value))吗?

=Sum(Fields!CurrentMV.Value)-Previous(Sum(Fields!CurrentMV.Value)) ? =Sum(Fields!CurrentMV.Value)-Previous(Sum(Fields!CurrentMV.Value)) or am I missing something obvious? 还是我缺少明显的东西?

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