Bug 141709 The Interface "IScalarParameterModel" should provide a "TEXT_ID_PROP" member.
In order to provide the "Localization" function in Property Editor of Parameter, it requires to implement a "ScalarParameterI18nPage" Class similar to the Class of "LabelI18nPage", and it consequently needs to "IScalarParameterModel" provide a "TEXT_ID_PROP" member for "ScalarParameterHandle" Class.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ScalarParameterHandle.java
* @param pattern
	 *            the format for the parameter value
	 * @throws SemanticException
	 *             if the property is locked.
	 */
	public void setPattern( String pattern ) throws SemanticException
	{
		Object value = element.getLocalProperty( module, FORMAT_PROP );
		if ( value == null )
		{
			FormatValue formatValueToSet = new ParameterFormatValue( );
			formatValueToSet.setPattern( pattern );
			setProperty( FORMAT_PROP, formatValueToSet );
		}
		else
		{
			PropertyHandle propHandle = getPropertyHandle( FORMAT_PROP );
			FormatValue formatValueToSet = (FormatValue) value;
			FormatValueHandle formatHandle = (FormatValueHandle) formatValueToSet
					.getHandle( propHandle );
			formatHandle.setPattern( pattern );
		}
	}
	/**
	 * Sets the category for the parameter format. The format is used by the UI
	 * to display the value.
	 * 
	 * @param category
	 *            the category for the format
	 * @throws SemanticException