# REDIS - global.get results in the ERROR
**URL:** https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857
**Category:** General
**Created:** [21 December 2020 20:20 UTC](https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857 "2020-12-21T20:20:46Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Tombcat](https://discourse.nodered.org/u/Tombcat)
#### Post date: [21 December 2020 20:20 UTC](https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857/1 "2020-12-21T20:20:47Z")
Hello I have changed the default context storage to the REDIS.
Configuration:
```auto
contextStorage: {
redis: {
module: require("node-red-context-redis"),
config: {
host: "**,
port:***,
}
}
},
```
When fetching the global data using the change node, it works. But with the function node, it shows: "Error: Callback must be a function"
Tried with and without setting the storeName.
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [21 December 2020 20:51 UTC](https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857/2 "2020-12-21T20:51:39Z")
Try the async version
"Writing Functions : Node-RED" [https://nodered.org/docs/user-guide/writing-functions#asynchronous-context-access](https://nodered.org/docs/user-guide/writing-functions#asynchronous-context-access)
Edit...
Seems this a known issue (and unreleased code)...
>
>
> When doing context.get, the returned value is undefined. Verified that context.set writes the value into Redis.
> global and flow contexts work as...
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### Author:  [@Tombcat](https://discourse.nodered.org/u/Tombcat)
#### Post date: [22 December 2020 10:52 UTC](https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857/3 "2020-12-22T10:52:58Z")
The async function works well but unfortunately this doesn't resolve my issue.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [20 February 2021 10:52 UTC](https://discourse.nodered.org/t/redis-global-get-results-in-the-error/37857/4 "2021-02-20T10:52:58Z")
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