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
/**
	 * Sets the data set name of the dynamic list for this parameter.
	 * 
	 * @param dataSetName
	 *            the data set name of the dynamic list
	 * @throws SemanticException
	 *             if the property is locked.
	 */
	public void setDataSetName( String dataSetName ) throws SemanticException
	{
		setStringProperty( ScalarParameter.DATASET_NAME_PROP, dataSetName );
	}
	/**
	 * Returns an expression on the data row from the dynamic list data set that
	 * returns the value for the choice.
	 * 
	 * @return the expression that returns the parameter value for each row in
	 *         the dynamic list.
	 */
	public String getValueExpr( )
	{
		return getStringProperty( ScalarParameter.VALUE_EXPR_PROP );
	}
	/**
	 * Sets an expression on the data row from the dynamic list data set that
	 * returns the value for the choice.
	 * 
	 * @param valueExpr
	 *            the expression that returns the parameter value for each row
	 *            in the dynamic list.