# Can get the element of the array for the value of node change?
**URL:** https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550
**Category:** General
**Created:** [30 September 2020 09:11 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550 "2020-09-30T09:11:23Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)
#### Post date: [30 September 2020 09:11 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/1 "2020-09-30T09:11:23Z")
Hi,
I try to get value of the array as the value for the variable setted by a `change` node,
but regardless of setting below, I can't get the element of the array:
- msg.payload[msg.i]
- msg.payload & '[' & msg.i & ']'
If possible please tell me. Thanks!
> msg : Object
> payload: array[13]
> i: 0
---
### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [30 September 2020 09:14 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/2 "2020-09-30T09:14:15Z")
Try using the expression: `$.payload[$$.i]`
---
### Author:  [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)
#### Post date: [30 September 2020 21:30 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/3 "2020-09-30T21:30:39Z")
I tried but the result is elem = array [13],
not the value of the **i** element of the array.
Also, I tried the following patterns also don't work:
```auto
$.payload[$.i]
$.payload[msg.i]
$.payload[i]
```
---
### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [30 September 2020 21:35 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/4 "2020-09-30T21:35:57Z")
well, it works for me:
```auto
[{"id":"7083de3b.2396e","type":"inject","z":"2ea8e5.34bdc71c","name":"","props":[{"p":"payload"},{"p":"i","v":"1","vt":"num"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[\"A\",\"B\",\"C\",\"D\"]","payloadType":"json","x":250,"y":440,"wires":[["54ab547f.7448fc"]]},{"id":"54ab547f.7448fc","type":"change","z":"2ea8e5.34bdc71c","name":"","rules":[{"t":"set","p":"elem","pt":"msg","to":"$.payload[$$.i]","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":440,"wires":[["435214cf.b1c6fc"]]},{"id":"435214cf.b1c6fc","type":"debug","z":"2ea8e5.34bdc71c","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"elem","targetType":"msg","statusVal":"","statusType":"auto","x":600,"y":440,"wires":[]}]
```
---
### Author:  [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)
#### Post date: [30 September 2020 21:56 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/5 "2020-09-30T21:56:30Z")
The way in your debug array display value is a little different,
perhaps this is the cause: 🙄
---
### Author:  [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)
#### Post date: [30 September 2020 22:08 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/6 "2020-09-30T22:08:53Z")
Ah but also not, I tried the output array of payload based on your sample,
the result is still correct: 🤔
```auto
[{"id":"4a376c99.1ad434","type":"function","z":"b3e29f7d.79d6e","name":"","func":"var arrElem = [];\n\nfor (var elem of msg.payload) {\n arrElem.push(elem);\n}\n\nmsg.payload = arrElem;\nreturn msg;","outputs":2,"noerr":0,"initialize":"","finalize":"","x":660,"y":1620,"wires":[["bca0af6a.32be5"],[]]},{"id":"fe5c0e84.c2107","type":"inject","z":"b3e29f7d.79d6e","name":"","props":[{"p":"payload"},{"p":"i","v":"1","vt":"num"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[\"A\",\"B\",\"C\",\"D\",\"E\",\"F\",\"G\",\"H\",\"I\",\"J\",\"K\",\"L\"]","payloadType":"json","x":519.8958129882812,"y":1621.2222900390625,"wires":[["4a376c99.1ad434"]]},{"id":"bca0af6a.32be5","type":"change","z":"b3e29f7d.79d6e","name":"","rules":[{"t":"set","p":"elem","pt":"msg","to":"$.payload[$$.i]","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":830,"y":1620,"wires":[["81a8e387.271d9"]]},{"id":"81a8e387.271d9","type":"debug","z":"b3e29f7d.79d6e","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":990,"y":1620,"wires":[]}]
```
I will confirm my flow again.
Thank you very much!
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [14 October 2020 22:08 UTC](https://discourse.nodered.org/t/can-get-the-element-of-the-array-for-the-value-of-node-change/33550/7 "2020-10-14T22:08:58Z")
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