IBaseExpression ibe = (IBaseExpression) map.get( expression ); if ( ibe == null ) { return null; } return set.evaluate( ibe );
return set.evaluate( expression );
	public Object evaluate( String expression )	{		IBaseExpression ibe = (IBaseExpression) map.get( expression );		if ( ibe == null )		{			return null;		}		return set.evaluate( ibe );	}