Bug 312859 The list of operator for Chart filter does not provide 30 visible items
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/dialogs/ChartCubeFilterConditionBuilder.java
boolean change = false;
						for(int i = 0; i < newValues.length; i ++)
						{
							if ( valueList.indexOf( DEUtil.resolveNull( newValues[i] ) ) < 0 )
							{
								valueList.add(  DEUtil.resolveNull( newValues[i] ) );
								change = true;
							}					
						}
						if(change)
						{
							tableViewer.refresh( );
							updateButtons( );
							addExpressionValue.setFocus( );
						}
					}
				}
			}
		}
	};
	private int create2ValueComposite( Composite condition )
	{
		if ( expressionValue1 != null && !expressionValue1.isDisposed( ) )
		{
			return 0;
		}
		if ( valueListComposite != null && !valueListComposite.isDisposed( ) )
		{