Dynamic Security in SSAS 2005

I am trying to create dynamic security and was hoping to use a named query to link the fact table to a dimension that contains Active Directory users and companies - a user can have access to multiple companies. The problem is that I cannot find out how to get the username of the current user.

Anyone have any ideas?

thanks in advance.

Does the standard MDX keyword: UserName return what you want, like:

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With member [Measures].[CurrentUser] as UserName

select {[Measures].[CurrentUser]} on 0

from [Adventure Works]

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thanks for the feedback - however, I am relatively new to Analysis Services (and 2005) - and cannot see where this would be created. Are you saying that this is a calculated Dimension (or measure?)

Many thanks

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The MDX keyword: UserName will return the name of the current user in an MDX expression, which could be used in many different contexts:

http://msdn2.microsoft.com/en-us/library/ms144884.aspx#expressions_statements_scripts

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SQL Server 2005 Books Online

Key Concepts in MDX (MDX)

In MDX, an expression is a combination of identifiers, values, functions, and operators that Analysis Services can evaluate to retrieve an object, such as a set or a member, or a scalar value like a string or a number.

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http://msdn2.microsoft.com/en-us/library/ms146016.aspx

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SQL Server 2005 Books Online

UserName (MDX)

Returns the domain name and user name of the current connection.

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|||Thanks for the feedback.