Bug 140620 Chart scripting errors are ignored
Write a chart with an invalid script, the execution simply ignores the script. This makes it difficult to debug scripting. The error message is also not precise and needs improvements.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/data/DataPackage.java
/**
		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute DATE_TIME_DATA_ELEMENT__VALUE = eINSTANCE.getDateTimeDataElement_Value( );
		/**
		 * The meta object literal for the '{@link org.eclipse.birt.chart.model.data.impl.DateTimeDataSetImpl <em>Date Time Data Set</em>}' class.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @see org.eclipse.birt.chart.model.data.impl.DateTimeDataSetImpl
		 * @see org.eclipse.birt.chart.model.data.impl.DataPackageImpl#getDateTimeDataSet()
		 * @generated
		 */
		EClass DATE_TIME_DATA_SET = eINSTANCE.getDateTimeDataSet( );
		/**
		 * The meta object literal for the '{@link org.eclipse.birt.chart.model.data.impl.NumberDataElementImpl <em>Number Data Element</em>}' class.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @see org.eclipse.birt.chart.model.data.impl.NumberDataElementImpl
		 * @see org.eclipse.birt.chart.model.data.impl.DataPackageImpl#getNumberDataElement()
		 * @generated
		 */
		EClass NUMBER_DATA_ELEMENT = eINSTANCE.getNumberDataElement( );
		/**
		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated