Bug 180864 Change Allow Null option in Cascading Group.[0705]
Description: Change Allow Null option in Cascading Group. Build number:2.2.0.v20070404 Steps to reproduce: 1. New a cascading group and add sub parameter. Expected result: Is Required option in cascading group definition dialog. Actual result: Allow null value option in Cascading Group definition dialog Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
}
				}
				else if ( columnIndex == 2 )
				{
					if ( isSingle( ) && paramHandle != getFirstParameter( ) )
					{
						value = LABEL_SELECT_VALUE_COLUMN;
					}
				}
			}
			else
			{
				switch ( columnIndex )
				{
					case 0 :
					{
						if ( paramHandle != newParameter )
						{
							String paramName;
							if ( paramHandle != selectedParameter )
							{
								paramName = paramHandle.getName( );
							}
							else
							{
								paramName = paramNameEditor.getText( ).trim( );
							}
							value = getDummyText( paramHandle ) + paramName;
						}
						break;