# How to get opcua curves from array of extension object?

**URL:** <https://discourse.nodered.org/t/how-to-get-opcua-curves-from-array-of-extension-object/83253>\
**Category:** General\
**Tags:** opcua\
**Created:** [28 November 2023 15:30 UTC](https://discourse.nodered.org/t/how-to-get-opcua-curves-from-array-of-extension-object/83253 "2023-11-28T15:30:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Elo](https://avatars.discourse-cdn.com/v4/letter/e/e19b73/32.png) [@Elo](https://discourse.nodered.org/u/Elo)\
**Post date:** [28 November 2023 15:30 UTC](https://discourse.nodered.org/t/how-to-get-opcua-curves-from-array-of-extension-object/83253/1 "2023-11-28T15:30:15Z")

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![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/e/be46c5b4e2cb11a4709f4d3498ac27176b231e64.png)

If I access the opcua server in the UaExpert software I can see CycleDoneEventType message with all data points in the Event View tab.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/b/3b8a0148e84a002e58f0e917764429d6c22cf332.png)

In the node-red, the extension object array is empty.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [27 January 2024 15:30 UTC](https://discourse.nodered.org/t/how-to-get-opcua-curves-from-array-of-extension-object/83253/2 "2024-01-27T15:30:25Z")

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