# How to refresh global variable
**URL:** https://discourse.nodered.org/t/how-to-refresh-global-variable/69820
**Category:** General
**Created:** [31 October 2022 09:50 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820 "2022-10-31T09:50:14Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@rush\_cs](https://discourse.nodered.org/u/rush_cs)
#### Post date: [31 October 2022 09:50 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/1 "2022-10-31T09:50:14Z")
I am currently using global variables to display data from different function. The data does not display real time changes. if I stop the flow, the value of the output changes. How can I make it so the values being displayed are updated real-time?
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [31 October 2022 10:01 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/2 "2022-10-31T10:01:25Z")
global variables are not reactive (by design)
there is a hack I posted (some time ago) to make them reactive but this no longer _really_ flow programming (you lose sight of what is changing and all the wonderful things node-red is about)
Instead, if you share a minimal flow example with some background of what you are doing & why - we can probably show you an event driven alternative way of achieving your goal.
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### Author:  [@rush\_cs](https://discourse.nodered.org/u/rush_cs)
#### Post date: [31 October 2022 10:27 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/3 "2022-10-31T10:27:22Z")
I am currently making a simulator for pumps. The pressure\_sim needs the current value of current and voltage.
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [31 October 2022 10:36 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/4 "2022-10-31T10:36:40Z")
Since I cannot see code and field values inside of a picture - I can only speculate.
Here is my initial guess...
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### Author:  [@rush\_cs](https://discourse.nodered.org/u/rush_cs)
#### Post date: [31 October 2022 10:49 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/5 "2022-10-31T10:49:03Z")
Thank you, it works now!
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [14 November 2022 10:49 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820/6 "2022-11-14T10:49:11Z")
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