# Persistent global context used in template node
**URL:** https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537
**Category:** General
**Created:** [8 December 2023 20:23 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537 "2023-12-08T20:23:35Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Tany](https://discourse.nodered.org/u/Tany)
#### Post date: [8 December 2023 20:23 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/1 "2023-12-08T20:23:35Z")
Hallo,
This code works perfect in a template node (html) to retrieve cvMode as a global variable... in memory.
Now I installed contrib-persistent-global-context, and with a function node... global.set('cvMode', "ON", "file").
Set & Get work fine.
settings.js contextStorage is set:
contextStorage: {
default: "memoryOnly",
memoryOnly: { module: 'memory' },
file: { module: 'localfilesystem' }
},
7 Dec 09:17:27 - [info] Node-RED version: v3.1.0
7 Dec 09:17:27 - [info] Node.js version: v18.18.2
7 Dec 09:17:27 - [info] Linux 6.1.0-rpi6-rpi-v8 arm64 LE
How to change value="{{global.cvMode}}" to get the variable from "file" ?
I also tried function getDocGVF which is called by windows.onload as part of :
function getDocGVF() {
document.getElementById('cvMode').value = global.get('cvMode', "file");
}
Neither worked.
☹
Pls your advise.
Thanks.
T
---
### Author:  [@Tany](https://discourse.nodered.org/u/Tany)
#### Post date: [8 December 2023 20:26 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/2 "2023-12-08T20:26:12Z")
oops... the copy lost the code:
input type="text" id="cvMode" name="cvMode" value="{{global.cvMode}}"
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [8 December 2023 20:58 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/3 "2023-12-08T20:58:28Z")
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote `````)
````auto
```
code goes here
```
````
You can edit and correct your post by clicking the pencil ✏ icon.
See this post for more details - [How to share code or flow json](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506)
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [8 December 2023 21:23 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/4 "2023-12-08T21:23:05Z")
> [@Tany](#):
>
> How to change value="{{global.cvMode}}" to get the variable from "file" ?
From template node help text
> t is possible to use a property from the flow context or global context. Just use `{{flow.name}}` or `{{global.name}}` , or for persistable store `store` use `{{flow[store].name}}` or `{{global[store].name}}` .
So `{{global[file].cvMode}}` should work
---
### Author:  [@Tany](https://discourse.nodered.org/u/Tany)
#### Post date: [9 December 2023 08:24 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/5 "2023-12-09T08:24:22Z")
Thank You.
1. I will comply the 3 backticks next time.
2.Yes, the suggestion works perfect
2. the template node help text... slipped my attention. Too much focussed on the syntax of set/get.
Best Regards.
T
---
### Author:  [@Tany](https://discourse.nodered.org/u/Tany)
#### Post date: [9 December 2023 12:05 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/6 "2023-12-09T12:05:20Z")
All GlobalVariables work now fine in functions and can be used in html.
On RPi I can observe them landing in directory /home/rpi/.node-red/context/global/global.json.
But when I drag an Inject, the Persistent-Global-Context and a Debug node on a flow, then I get :
"Error: ENOENT: no such file or directory, open 'undefined/GlobalContext.json'"
and
"Cannot find json file inside [undefined/GlobalContext.json]!" from the Debug node
A Stop/Start of Node-Red does not show errors on the CommandLine of RPi.
What am I missing ?
Cheers,
T
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [9 December 2023 13:19 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/7 "2023-12-09T13:19:58Z")
> [@Tany](#):
>
> Persistent-Global-Context
I don't understand what you mean by that.
> [@Tany](#):
>
> I installed contrib-persistent-global-context,
There is no need for that, persistent context is built into node-red core.
---
### Author:  [@Tany](https://discourse.nodered.org/u/Tany)
#### Post date: [9 December 2023 13:47 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/8 "2023-12-09T13:47:22Z")
Thank You.
As there is no need... I removed it, and all works still fine.
As a NR novice I just tried to understand why
Cheers,
T
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [9 December 2023 14:06 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/9 "2023-12-09T14:06:54Z")
> [@Tany](#):
>
> I just tried to understand why
I tried it and get the same error. It appears to be a bug in the node. You could report an issue on the node's github page if you wanted to.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [7 February 2024 14:07 UTC](https://discourse.nodered.org/t/persistent-global-context-used-in-template-node/83537/10 "2024-02-07T14:07:35Z")
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