Bug 214706 Script UID doens't work for Chart
Use chart "onRender" property handle and call ModuleUtil.getScriptUID(), it generates the id. But later use this id to get back the PropertyHandle or Script content, it fails.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/PropertyHandle.java
break;
			}
		}
		if ( isReadOnly )
			return true;
		return isReadOnlyInContext( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.SimpleValueHandle#isVisible()
	 */
	public boolean isVisible( )
	{
		boolean isVisible = true;
		switch ( propDefn.getValueType( ) )
		{
			case IPropertyDefn.SYSTEM_PROPERTY :
			case IPropertyDefn.EXTENSION_PROPERTY :
			case IPropertyDefn.ODA_PROPERTY :
				IElementDefn elementDefn = getElementHandle( ).getDefn( );
				if ( !elementDefn.isPropertyVisible( propDefn.getName( ) ) )
					isVisible = false;
				break;
			case IPropertyDefn.EXTENSION_MODEL_PROPERTY :
				if ( !propDefn.isVisible( ) )
					isVisible = false;
				break;
			case IPropertyDefn.USER_PROPERTY :
				if ( !propDefn.isVisible( ) )