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
}
		else if ( DesignChoiceConstants.PARAM_TYPE_FLOAT.equals( type ) )
		{
			return DesignChoiceConstants.COLUMN_DATA_TYPE_FLOAT.equals( columnHandle.getDataType( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_INTEGER.equals( type ) )
		{
			return DesignChoiceConstants.COLUMN_DATA_TYPE_INTEGER.equals( columnHandle.getDataType( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_DATE.equals( columnHandle.getDataType( ) ) )
		{
			return DesignChoiceConstants.COLUMN_DATA_TYPE_DATE.equals( type );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_TIME.equals( columnHandle.getDataType( ) ) )
		{
			return DesignChoiceConstants.COLUMN_DATA_TYPE_TIME.equals( type );
		}
		return false;
	}
	private void saveParameterProperties( ) throws SemanticException
	{
		if ( selectedParameter != null && selectedParameter != newParameter )
		{
			selectedParameter.setPromptText( UIUtil.convertToModelString( promptText.getText( ),
					false ) );
			selectedParameter.setHelpText( UIUtil.convertToModelString( helpTextEditor.getText( ),
					true ) );
			if ( selectedParameter.getDataType( )
					.equals( DesignChoiceConstants.PARAM_TYPE_STRING ) )
			{