Returns a cube cell value for a given cross section of the cube. Use the Insert Formula > Value menu or ribbon item to insert the formula using a wizard. 

XL3Lookup( Connection, [Hierarchy1], [Member1],…, [Hierarchy100], [Member100] )

ParameterDescription
ConnectionConnection number to use.
Hierarchy1,…, HierarchyNName of the hierarchy that the following member applies to for example "Measures" or "[Customer].[Customer Geography]".
Member1,…, MemberNEither a single member's unique name or an XL3Member formula.

This example is based on the Bicycle Sales cube.

Revenue 2004.

=XL3Lookup( 1, "[Time]", "[Time].[2004]", "[KeyFigures]", "[KeyFigures].[Revenue]" )

Sum of Revenue 2003 and 2004.

=XL3Lookup( 1, "Time", XL3Member(1, "Time", "2003", "2004"), "KeyFigures", "Revenue" )

You can specify an MDX calculation for members using the MDX: syntax.

Variance %.

=XL3Lookup( 1, "Channel", "Direct Sales", "KeyFigures", "Revenue", "Scenario", "MDX:(Budget-Actual)/Budget", "Time", "January 2003" )

% of Previous Year.

=XL3Lookup( 1, "Time", "2003", "Measures", "MDX:((Measures.Revenue,ParallelPeriod(Time.Year))-(Measures.Revenue))/(Measures.Revenue,ParallelPeriod(Time.Year))" )