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/component/Axis.java
* <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @param value the new value of the '<em>Format Specifier</em>' containment reference.
	 * @see #getFormatSpecifier()
	 * @generated
	 */
	void setFormatSpecifier( FormatSpecifier value );
	/**
	 * Returns the value of the '<em><b>Label Position</b></em>' attribute. The default value is
	 * <code>"Above"</code>. The literals are from the enumeration
	 * {@link org.eclipse.birt.chart.model.attribute.Position}. <!-- begin-user-doc --> <!-- end-user-doc --> <!--
	 * begin-model-doc -->
	 * 
	 * Specifies where the labels for the axis should be displayed.
	 * 
	 * <!-- end-model-doc -->
	 * 
	 * @return the value of the '<em>Label Position</em>' attribute.
	 * @see org.eclipse.birt.chart.model.attribute.Position
	 * @see #isSetLabelPosition()
	 * @see #unsetLabelPosition()
	 * @see #setLabelPosition(Position)
	 * @see org.eclipse.birt.chart.model.component.ComponentPackage#getAxis_LabelPosition()
	 * @model default="Above" unique="false" unsettable="true"
	 * @generated
	 */
	Position getLabelPosition( );
	/**
	 * Sets the value of the '
	 * {@link org.eclipse.birt.chart.model.component.Axis#getLabelPosition <em>Label Position</em>}' attribute. <!--
	 * begin-user-doc --> <!-- end-user-doc -->