Bug 182673 No default value error message prompts incorrectly
Steps to reproduce: 1. New a report parameter; 2. Choose control type as Combo; 3. Choose parameter as dynamic type; Expected result: As the isRequired is false by default, parameter's default value can be null value. There should be no error message about no default value prompt. Actual result; Error messages prompts
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
}
			if ( element == newParameter )
			{
				if ( isSingle( ) )
				{
					if ( element == getFirstParameter( ) )
					{
						if ( !COLUMN_DATA_SET.equals( property ) )
						{
							return false;
						}
					}
					else
					{
						if ( !COLUMN_VALUE.equals( property ) )
						{
							return false;
						}
					}
				}
				else if ( !COLUMN_DATA_SET.equals( property ) )
				{
					return false;
				}
			}
			if ( COLUMN_VALUE.equals( property ) )
			{
				if ( getDataSetColumns( (ScalarParameterHandle) element, true ).length == 0 )
				{
					return false;