# system.opc.writeValues() --\> QualityCode\[\] : only first object returned **URL:** \ **Category:** Ignition Early Access\ **Tags:** scripting\ **Created:** [April 6, 2020, 8:25pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723 "2020-04-06T20:25:21Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 6, 2020, 8:25pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/1 "2020-04-06T20:25:21Z")
> returnQuality = system.opc.writeValues(server, NodeID, newValue) > > returnQuality[1].isGood(): throws AttributeError: 'NoneType' object has no attribute 'isGood' > returnQuality[0].isGood(): does not > returnQuality = system.opc.writeValue(server, NodeID[n], newValue[n]) > returnQuality.isGood(): does not [https://docs.inductiveautomation.com/display/DOC80/system.opc.writeValues](https://docs.inductiveautomation.com/display/DOC80/system.opc.writeValues) ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 6, 2020, 8:29pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/2 "2020-04-06T20:29:01Z")
All nodes are updated, but only one quality object is returned. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 6, 2020, 8:47pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/3 "2020-04-06T20:47:29Z")
> [@ecujak](#): > > > returnQuality = system.opc.writeValues(server, NodeID, newValue) > > > > returnQuality[1].isGood(): > > throws AttributeError: ‘NoneType’ object has no attribute ‘isGood’ Can you share more code? What are the values of `NodeID` and `newValue` in this case? I'd have to guess they're just lists with one element each... ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 6, 2020, 9:11pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/4 "2020-04-06T21:11:24Z")
only static until I understand more: ```auto NodeID = [] NodeID.append("ns=4;i=169") NodeID.append("ns=4;i=170") NodeID.append("ns=4;i=171") oldQualifiedValue = [] oldQualifiedValue.append(system.opc.readValue(server, NodeID[0])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[1])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[2])) newValue = [] newValue.append(oldQualifiedValue[0].getValue()) newValue.append(oldQualifiedValue[1].getValue()) newValue.append(oldQualifiedValue[2].getValue()) newValue[0][0] = long(myValue[0]) newValue[1][0] = long(myValue[1]) newValue[2][0] = myValue[2][0:12] ``` ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 6, 2020, 9:27pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/5 "2020-04-06T21:27:56Z")
You must be leaving something out or there’s something weird going on with your final reassignment to `newValue`. This works fine: ```auto server = "Ignition OPC UA Server" NodeID = [] NodeID.append("ns=1;s=[sim]_Meta:Writeable/WriteableInteger1") NodeID.append("ns=1;s=[sim]_Meta:Writeable/WriteableInteger2") NodeID.append("ns=1;s=[sim]_Meta:Writeable/WriteableInteger3") oldQualifiedValue = [] oldQualifiedValue.append(system.opc.readValue(server, NodeID[0])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[1])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[2])) newValue = [] newValue.append(oldQualifiedValue[0].getValue()) newValue.append(oldQualifiedValue[1].getValue()) newValue.append(oldQualifiedValue[2].getValue()) newValue[0] = newValue[0] + 1 newValue[1] = newValue[1] + 1 newValue[2] = newValue[2] + 1 returnQuality = system.opc.writeValues(server, NodeID, newValue) print returnQuality[0].isGood() print returnQuality[1].isGood() print returnQuality[2].isGood() ``` ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 7, 2020, 12:53pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/6 "2020-04-07T12:53:31Z")
> [@Kevin.Herron](#): > > newValue[0] = newValue[0] + 1 > newValue[1] = newValue[1] + 1 > newValue[2] = newValue[2] + 1 ```auto newValue = [] newValue.append(oldQualifiedValue[0].getValue()) newValue.append(oldQualifiedValue[1].getValue()) newValue.append(oldQualifiedValue[2].getValue()) newValue[0][0] = long(myValue[0]) newValue[1][0] = long(myValue[1]) newValue[2][0] = myValue[2][0:12] ``` I struggle with type. This is the only way I can write without type errors I am sure I am doing something wrong, but I found an example on a java site and it worked. ```auto print newValue[0] print newValue[1] print newValue[2] ``` results : ```auto array(java.lang.Long,[1L]) array(java.lang.Long,[9L]) array(java.lang.string,[u'SomeText']) ``` Either way, the node values are written, I just don't get a quality code back for anything other than the first object of the returned list. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 7, 2020, 1:37pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/7 "2020-04-07T13:37:07Z")
Still works if I write to array values like you are doing and then update just one element. ```auto # ns=1;s=[sim]_Meta:Writeable/WriteableFloat2 # ns=2;s=CTT/Static/All Profiles/Array/Int16Array server = "Eclipse Milo OPC UA Demo Server" NodeID = [] NodeID.append("ns=2;s=CTT/Static/All Profiles/Array/Int16Array") NodeID.append("ns=2;s=CTT/Static/All Profiles/Array/Int32Array") NodeID.append("ns=2;s=CTT/Static/All Profiles/Array/Int64Array") oldQualifiedValue = [] oldQualifiedValue.append(system.opc.readValue(server, NodeID[0])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[1])) oldQualifiedValue.append(system.opc.readValue(server, NodeID[2])) newValue = [] newValue.append(oldQualifiedValue[0].getValue()) newValue.append(oldQualifiedValue[1].getValue()) newValue.append(oldQualifiedValue[2].getValue()) print "newValue before: %s" % newValue newValue[0][0] = newValue[0][0] + 1 newValue[1][0] = newValue[1][0] + 1 newValue[2][0] = newValue[2][0] + 1 print "newValue after: %s" % newValue returnQuality = system.opc.writeValues(server, NodeID, newValue) print "return quality: %s" % returnQuality print returnQuality[0].isGood() print returnQuality[1].isGood() print returnQuality[2].isGood() ``` Results: ```auto newValue before: [array(java.lang.Short, [2, 0, 0, 0, 0]), array(java.lang.Integer, [2, 0, 0, 0, 0]), array(java.lang.Long, [2L, 0L, 0L, 0L, 0L])] newValue after: [array(java.lang.Short, [3, 0, 0, 0, 0]), array(java.lang.Integer, [3, 0, 0, 0, 0]), array(java.lang.Long, [3L, 0L, 0L, 0L, 0L])] return quality: array(com.inductiveautomation.ignition.common.model.values.QualityCode, [Good, Good, Good]) True True True ``` ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 7, 2020, 1:53pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/8 "2020-04-07T13:53:06Z")
array(com.inductiveautomation.ignition.common.model.values.QualityCode, [Good, None, None]) I get these codes but the writes are completed. Is this a failure of the device to report the write was completed? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 7, 2020, 1:54pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/9 "2020-04-07T13:54:46Z")
I don’t know. This is very strange. Can you capture this write happening on Wireshark? And/or find the logger for `com.inductiveautomation.ignition.gateway.opcua.client.connection.OpcUaConnection` and turn it to TRACE level before doing the write again? (and then get me the logs) ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 7, 2020, 1:55pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/10 "2020-04-07T13:55:47Z")
> [@Kevin.Herron](#): > > com.inductiveautomation.ignition.gateway.opcua.client.connection.OpcUaConnection Yes, I will try the trace first. Thank you again for the quick response. ---
**Author:** ![ecujak](https://avatars.discourse-cdn.com/v4/letter/e/839c29/32.png) [@ecujak](https://forum.inductiveautomation.com/u/ecujak)\ **Post date:** [April 7, 2020, 6:11pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/11 "2020-04-07T18:11:13Z")
The trace doesn’t show much. I get an Index 1 out of bounds error, but it doesn’t say more. I will capture with wireshark when I have time. The values are written correctly, but now all three return values are bad. When I write one value at a time I get good quality. Maybe the device isn’t responding for each or any of the bulk updates. You can close or hide this thread, as I don’t think it will help anyone else on here. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 7, 2020, 6:15pm UTC](https://forum.inductiveautomation.com/t/system-opc-writevalues-qualitycode-only-first-object-returned/33723/12 "2020-04-07T18:15:36Z")
> [@ecujak](#): > > I get an Index 1 out of bounds error, but it doesn’t say more. This means your server is broken in an interesting way I've never seen before. As you guessed earlier, this server is only returning 1 operation result instead of 3. Wireshark will probably confirm this.