Bug 122941 Group interval range resets to 1
1. Create a group based on orders.orderNumber. 2. Specify an interval range of 100. 3. Do not check "Use fixed base value for interval" 4. Preview the report. Report groups on every order number. 5. Open the group editor. The interval range is set to 1.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
{
			ascending.setSelection( true );
		}
		else
		{
			descending.setSelection( true );
		}
		List list = new ArrayList( 1 );
		list.add( inputGroup );
		
		tocEditor.setText( UIUtil.convertToGUIString( inputGroup.getTocExpression( ) ) );
		return true;
	}
	/**
	 * Sets the model input.
	 * 
	 * @param input
	 */
	public void setInput( Object input )
	{
		Assert.isTrue( input instanceof GroupHandle );
		inputGroup = (GroupHandle) input;
	}
	/**
	 * Sets the dataset list to use.
	 * 
	 * @param dataSetList
	 */
	public void setDataSetList( List dataSetList )
	{