# Json, how can i add the msg.payload object as a variable in JSON
**URL:** https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108
**Category:** General
**Created:** [2 April 2020 16:50 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108 "2020-04-02T16:50:06Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Beefy\_carrot](https://discourse.nodered.org/u/Beefy_carrot)
#### Post date: [2 April 2020 16:50 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/1 "2020-04-02T16:50:07Z")
Hi! im new to node red, but im trying to send a payload from a sensor over to a database. this works fine using a text string. But my question is, how can i add the msg.payload variable(that holds the data from the sensor) instead of the data variable with the string Hello World?
json structure is this (added placeholders for the other variables):
msg.payload = {
'deviceId':"SensorName",
'key':"KeyData",
'protocol':"mqtt",
'data':'Hello world'
}
return msg;
---
### Author:  [@gerry](https://discourse.nodered.org/u/gerry)
#### Post date: [2 April 2020 17:03 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/2 "2020-04-02T17:03:46Z")
let a = "some data";
msg = {
payload: a,
}
or am I looking at this backwards for what you want? otherwise afelix has a good suggestion
---
### Author:  [@afelix](https://discourse.nodered.org/u/afelix)
#### Post date: [2 April 2020 17:04 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/3 "2020-04-02T17:04:24Z")
Use a change node and read [Working with Messages](https://nodered.org/docs/user-guide/messages).
---
### Author:  [@Beefy\_carrot](https://discourse.nodered.org/u/Beefy_carrot)
#### Post date: [2 April 2020 22:39 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/4 "2020-04-02T22:39:00Z")
dunno 😛 but i solved it by changing it to a java script object and converting it with the json node
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### Author:  [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)
#### Post date: [2 April 2020 23:04 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/5 "2020-04-02T23:04:08Z")
> [@Beefy\_carrot](#):
>
> msg.payload = {
> 'deviceId':"SensorName",
> 'key':"KeyData",
> 'protocol':"mqtt",
> 'data':'Hello world'
> }
> return msg;
Shouldn't that be;
```auto
msg.payload = {
deviceId: SensorName,
key: KeyData,
protocol: mqtt,
data: 'Hello world'
}
return msg;
```
---
### Author:  [@Beefy\_carrot](https://discourse.nodered.org/u/Beefy_carrot)
#### Post date: [3 April 2020 12:40 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/6 "2020-04-03T12:40:35Z")
yes ! 🙂 exactly what i did, changed 'hello world with msg.payload and used a json node to convert. i guess i tried to turn the js object into json manually, the first time ^^. but thanks for reply
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [17 April 2020 12:42 UTC](https://discourse.nodered.org/t/json-how-can-i-add-the-msg-payload-object-as-a-variable-in-json/24108/7 "2020-04-17T12:42:08Z")
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