Invalid Dataset Referenced Field?

here's my mdx code for my parameter (CrashVehicleVehicleType)

WITH MEMBER [Measures].[ParameterCaption] AS '[Crash Vehicle].[Vehicle Type].CURRENTMEMBER.MEMBER_CAPTION' MEMBER [Measures].[ParameterValue] AS '[Crash Vehicle].[Vehicle Type].CURRENTMEMBER.UNIQUENAME' MEMBER [Measures].[ParameterLevel] AS '[Crash Vehicle].[Vehicle Type].CURRENTMEMBER.LEVEL.ORDINAL' SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue], [Measures].[ParameterLevel]} ON COLUMNS , [Crash Vehicle].[Vehicle Type].ALLMEMBERS ON ROWS FROM [SDMTest]

why do i keep getting this error if i have a parameter value and caption

[rsInvalidDataSetReferenceField] The report parameter ‘CrashVehicleVehicleType’ uses the field ‘ParameterValue’ in a data set reference, but the data set ‘CrashVehicleVehicleType’ does not contain that field.

Check the XML Code behind page of each report.

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this is the xml behind the report im working on.....It says the value and caption is in these datasets?! i just dont get it.

</DataSet>

<DataSet Name="FromDateCalendarDate">

<Query>

<rd:SuppressAutoUpdate>true</rd:SuppressAutoUpdate>

<CommandText>WITH MEMBER [Measures].[ParameterCaption] AS '[Date].[Calendar Date].CURRENTMEMBER.MEMBER_CAPTION' MEMBER [Measures].[ParameterValue] AS '[Date].[Calendar Date].CURRENTMEMBER.UNIQUENAME' MEMBER [Measures].[ParameterLevel] AS '[Date].[Calendar Date].CURRENTMEMBER.LEVEL.ORDINAL' SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue], [Measures].[ParameterLevel]} ON COLUMNS , [Date].[Calendar Date].ALLMEMBERS ON ROWS FROM [SDMTest]</CommandText>

<DataSourceName>NewCrashTest</DataSourceName>

<rd:AutoGenerated>true</rd:AutoGenerated>

<rd:MdxQuery><QueryDefinition xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.microsoft.com/AnalysisServices/QueryDefinition"><CommandType>MDX</CommandType><Type>Query</Type><QuerySpecification xsi:type="MDXQuerySpecification"><Select><Items /></Select><From>SDMTest</From><Filter><FilterItems /></Filter><Calculations /><Aggregates /><QueryProperties /></QuerySpecification><Query><Statement>WITH MEMBER [Measures].[ParameterCaption] AS '[Date].[Calendar Date].CURRENTMEMBER.MEMBER_CAPTION' MEMBER [Measures].[ParameterValue] AS '[Date].[Calendar Date].CURRENTMEMBER.UNIQUENAME' MEMBER [Measures].[ParameterLevel] AS '[Date].[Calendar Date].CURRENTMEMBER.LEVEL.ORDINAL' SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue], [Measures].[ParameterLevel]} ON COLUMNS , [Date].[Calendar Date].ALLMEMBERS ON ROWS FROM [SDMTest]</Statement><ParameterDefinitions /></Query></QueryDefinition></rd:MdxQuery>

<rd:Hidden>true</rd:Hidden>

</Query>

</DataSet>

<DataSet Name="ToDateCalendarDate">

<Query>

<CommandText>WITH MEMBER [Measures].[ParameterCaption] AS '[Date].[Calendar Date].CURRENTMEMBER.MEMBER_CAPTION' MEMBER [Measures].[ParameterValue] AS '[Date].[Calendar Date].CURRENTMEMBER.UNIQUENAME' MEMBER [Measures].[ParameterLevel] AS '[Date].[Calendar Date].CURRENTMEMBER.LEVEL.ORDINAL' SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue], [Measures].[ParameterLevel]} ON COLUMNS , [Date].[Calendar Date].ALLMEMBERS ON ROWS FROM [SDMTest]</CommandText>

<DataSourceName>NewCrashTest</DataSourceName>

<rd:AutoGenerated>true</rd:AutoGenerated>

<rd:MdxQuery><QueryDefinition xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/AnalysisServices/QueryDefinition"><CommandType>MDX</CommandType><Type>Query</Type><QuerySpecification xsi:type="MDXQuerySpecification"><Select><Items /></Select><From>SDMTest</From></QuerySpecification><Query><Statement>WITH MEMBER [Measures].[ParameterCaption] AS '[Date].[Calendar Date].CURRENTMEMBER.MEMBER_CAPTION' MEMBER [Measures].[ParameterValue] AS '[Date].[Calendar Date].CURRENTMEMBER.UNIQUENAME' MEMBER [Measures].[ParameterLevel] AS '[Date].[Calendar Date].CURRENTMEMBER.LEVEL.ORDINAL' SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue], [Measures].[ParameterLevel]} ON COLUMNS , [Date].[Calendar Date].ALLMEMBERS ON ROWS FROM [SDMTest]</Statement></Query></QueryDefinition></rd:MdxQuery>

<rd:Hidden>true</rd:Hidden>

</Query>

<Fields>