Dashboard Filter Question

I have a report that shows opportunities for the current user only.  The list is long and the users want a filter based on the account.  I've created a Dashboard Prompt using the Account Name and in the Show field specify SQL Results.  If I enter the code of SELECT Account."Account Name" FROM "Opportunity Lists" WHERE Opportunity.Owner = 'Specific User Name' it works great.  But the 'Specific User Name' needs to be dependent on the current user.  I tried using a session variable and write the code like this: SELECT Account."Account Name" FROM "Opportunity Lists" WHERE Opportunity.Owner = NQ_SESSION.USER_ALIAS   but