Bug 165897 [Salesforce Project]Table column lost its data when insert a new column to the right
Reproduce steps: 1. Get and install BIRT Salesforce ODA driver. 2. Download the attached BIRT report design. 3. Insert a new column to the right of Negotiation/Review. 4. Input name as "Month Grand Total" and expression as following: row["Prospecting"]+row["Qualification"]+row["NeedsAnalysis"]+row["ValueProposition"]+row["IdDecisionMakers"]+row["PerceptionAnalysis"]+row["ProposalPriceQuote"]+row["NegotiationReview"] 5. Run the report and Negotiation/Review column lost its data.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/expression/ExpressionProcessor.java
if ( op != null )
					helper.compileExpression( op, context );
				if ( op1 != null )
					helper.compileExpression( op1, context );
				if ( op2 != null )
					helper.compileExpression( op2, context );
			}
			else if ( baseExpression instanceof IScriptExpression )
			{
				IScriptExpression scriptExpr = (IScriptExpression) baseExpression;
				helper.compileExpression( scriptExpr, context );
			}
		}
		finally
		{
			Context.exit( );
		}
	}
	
	/**
	 * Return the index of group according to the given group text.
	 * @param groupText
	 * @return The index of group 
	 */
	private int getCurrentGroupLevel( String groupText, int start, BaseQuery query )
	{
		assert groupText != null;
		assert query != null;
		GroupSpec[] groups = query.getGrouping( );
		for ( int i = start; i < groups.length; i++ )