# OPCUA subscribe problem

**URL:** <https://discourse.nodered.org/t/opcua-subscribe-problem/10498>\
**Category:** General\
**Created:** [24 April 2019 10:53 UTC](https://discourse.nodered.org/t/opcua-subscribe-problem/10498 "2019-04-24T10:53:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![smalhao](https://avatars.discourse-cdn.com/v4/letter/s/a3d4f5/32.png) [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Post date:** [24 April 2019 10:53 UTC](https://discourse.nodered.org/t/opcua-subscribe-problem/10498/1 "2019-04-24T10:53:16Z")

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I have a problem in subscribing to topics with OPCUA, when it does the subscription and this gets active subscribed, but the problem I'm having is that from time to time it passes to active subscribing, I have several topics set up and it's just this one that makes me, can this have to do with the timestamp definition (ns = 2; i = 2) and the OPCUA block node?  
In the timestamp I have set the time of 1 minute and in the OPCUA block I also have 1 minute.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/f/f865ca5e24433f8851c1c586fc4e9993248dae64.png)

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/d/d6eff47b7f44d25355249219fc7358d4fb971211.png)