# Writing tag values to ignition OPC UA Server **URL:** \ **Category:** Ignition\ **Created:** [November 27, 2023, 8:01pm UTC](https://forum.inductiveautomation.com/t/writing-tag-values-to-ignition-opc-ua-server/82401 "2023-11-27T20:01:28Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![historian\_user](https://avatars.discourse-cdn.com/v4/letter/h/df788c/32.png) [@historian\_user](https://forum.inductiveautomation.com/u/historian_user)\ **Post date:** [November 27, 2023, 8:01pm UTC](https://forum.inductiveautomation.com/t/writing-tag-values-to-ignition-opc-ua-server/82401/1 "2023-11-27T20:01:28Z")
Hi, I am trying to write different register tags into the Ignition OPC UA server from where I Can read it using my Node red Modbus server. Any pointers to how I can proceed? I want to use a view from where I Can just push values to the tags and see updated values in the view as well as node red. ---
**Author:** ![historian\_user](https://avatars.discourse-cdn.com/v4/letter/h/df788c/32.png) [@historian\_user](https://forum.inductiveautomation.com/u/historian_user)\ **Post date:** [November 29, 2023, 2:45pm UTC](https://forum.inductiveautomation.com/t/writing-tag-values-to-ignition-opc-ua-server/82401/2 "2023-11-29T14:45:01Z")
OK so I played with a numeric text field which read the tag value. I had a button which when clicked would update the same tag using the numerictextfield.intvalue.. Is there a way to auto update without using a button or event?? It reminds me of the [asp.net](http://asp.net) visual studio days and its refreshing to have such features in a SCADA system 🙂 ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 29, 2023, 2:46pm UTC](https://forum.inductiveautomation.com/t/writing-tag-values-to-ignition-opc-ua-server/82401/3 "2023-11-29T14:46:03Z")
That's what bidirectional bindings are for.