API ClientsTypeScript SDKAPI ReferenceCorevariablesHistoryItemIdVersion: 8.10On this pageVariable: HistoryItemId HistoryItemId: object; Type Declaration assumeExists() assumeExists(value): HistoryItemId; Parameters value string Returns HistoryItemId getValue() getValue(key): string; Parameters key HistoryItemId Returns string isValid() isValid(value): boolean; Parameters value string Returns booleanWas this helpful?