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
fExprMap.values( ).toArray( new String[]{} ) );
						dialog.setExpressionProvider( exprProvider );
					}
					else
						dialog.setExpressionProvider( expressionProvider );
					if ( dialog.open( ) == IDialogConstants.OK_ID )
					{
						returnValue = true;
						newValues[0] = dialog.getResult( );
					}
				}
				else if ( selectionIndex > 3 )
				{
					newValues[0] = "params[\"" + value + "\"]"; 
				}
				
				if(returnValue)
				{
					if(addExpressionValue == thisCombo)
					{
						thisCombo.setText(""); 
						addBtn.setEnabled( false );
					}else					
					if(newValues.length == 1)
					{
						thisCombo.setText(DEUtil.resolveNull( newValues[0] ));
					}
					
					if ( isAddClick )
					{