Please include the full source code file, ideally as attachment and not an "embedded" code. From the error message, it seems that the NodeId is invalid. It can be something on our side (parsing the NodeId string), but more likely it is copy-paste or typo error in the source.

Best regards

Hello, with the recent update of the quickopc library i'm able to read complex data using library examples.  Now I have problem writing data. Some data types can be written without problems and others not. Using the example found on this link ( opclabs.doc-that.com/files/onlinedocs/OPCLabs-ConnectivitySt...AGenericObject~DataTypeId.html ) I can update correctly byte data but if I try to modify/update integer data i have this exception: 

OpcLabs.EasyOpc.UA.OperationModel.UAException: 'An OPC-UA operation failure with error ID 'OpcLabs.UAEngine=4601' occurred, originating from '' and with depth of 1. The inner exception, with error Id "OpcLabs.UAEngine=4601", contains details about the problem.'
Inner Exception:
UAEngineException: The status of the OPC-UA attribute data is not Good. The actual status is 'BadNodeIdUnknown'.
+ During writing or method calls, readings may occur when value type is not specified.
+ The node descriptor used was: NodeId="s=nsu = test.org/UA/Data/ ;i=10239".
+ The client method called (or event/callback invoked) was 'WriteMultiple[1]'.

This is my code used to update data:

 var data1 = (StructuredData)genericObject.GenericData;
 var data2 = (SequenceData)data1.FieldData["Int32Value"];
 var data3= (PrimitiveData)data2.Elements[0];
 data3.Value = (int)12345;
 Thank you.