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.tests/test/org/eclipse/birt/report/model/util/XPathUtilTest.java
.getInstance(
						designHandle,
						"/report/data-sets/oda-data-set/structure[@name=\"cachedMetaData\"]/list-property[@name=\"resultSet\"]/structure[1]" ); 
		assertTrue( retValue instanceof ResultSetColumnHandle );
		ResultSetColumnHandle column = (ResultSetColumnHandle) retValue;
		assertEquals( "name1", column.getColumnName( ) ); 
		assertTrue( 1 == column.getPosition( ).intValue( ) );
		retValue = XPathUtil
				.getInstance(
						designHandle,
						"/report/data-sets/oda-data-set/structure[@name=\"cachedMetaData\"]/list-property[@name=\"resultSet\"]/structure[2]" ); 
		assertTrue( retValue instanceof ResultSetColumnHandle );
		column = (ResultSetColumnHandle) retValue;
		assertEquals( "date1", column.getColumnName( ) ); 
		assertTrue( 2 == column.getPosition( ).intValue( ) );
		retValue = XPathUtil
				.getInstance(
						designHandle,
						"/report/data-sets/oda-data-set/structure[@name=\"cachedMetaData\"]/list-property[@name=\"resultSet\"]" ); 
		assertNull( retValue );
		
		retValue = XPathUtil.getInstance( designHandle,
				"/report/data-sets/oda-data-set" ); 
		assertTrue( retValue instanceof OdaDataSetHandle );
		
		assertNull( XPathUtil.getInstance( designHandle, "*/" ) ); 
		assertNull( XPathUtil.getInstance( designHandle, "/library" ) ); 
		assertNull( XPathUtil.getInstance( designHandle, "/report/*/body" ) ); 
		assertNull( XPathUtil.getInstance( designHandle,
				"/report/list-property[@name=\"images\"]/structure[3]" ) );