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bendertez
Yak Posting Veteran
94 Posts |
 Posted - 2010-09-21 : 09:08:57
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| Hi I have a simple expression which looks at two value fields (one current and one from the previous month) and does a comparison so I can see the rise or fall of the value on a month to month basis. This currently works okay:=(Fields!PreviousTotal.Value)-(Fields!CurrentTotal.Value)However sometimes there isn't a previous months value (i.e. from a new account) which then gives just me the amount of the current value as there is nothing to take away.What I really want is a null value returning where there is no PreviousTotal rather than the difference.Can this be done within the expression?Thanks in advanceDave |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2010-09-21 : 12:25:19
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| =IIF(Len(Fields!PreviousTotal.Value)>0,(Fields!PreviousTotal.Value)-(Fields!CurrentTotal.Value),Nothing)------------------------------------------------------------------------------------------------------SQL Server MVPhttp://visakhm.blogspot.com/ |
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bendertez
Yak Posting Veteran
94 Posts |
Posted - 2010-09-24 : 08:50:31
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| Thanks Visakh, that's worked perfectly. |
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Expression Help