# Incorrectly formatted json string
**URL:** https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693
**Category:** General
**Tags:** mqtt
**Created:** [20 February 2022 13:27 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693 "2022-02-20T13:27:25Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@GrantWise](https://discourse.nodered.org/u/GrantWise)
#### Post date: [20 February 2022 13:27 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693/1 "2022-02-20T13:27:25Z")
Hi, I am very new to node-red and MQTT so the problem that I have found has taken me a while to pin down. I have a device that is logging the temperature on 3 channels, currently I only have 1 working, which I want to log into a InfluxDb.
The problem that I have is that the message that the device is returning is incorrectly formatted, see below, the last "false" is missing the "e" which is causing a problem.
{"n\_channels":4,"n\_alarms":10,"timestamp":1645370661,"battery":5.89,"value\_channels":[0.0,0.0,28.1,0.0],"alarms":[false,false,false,false,false,false,false,false,false,false],"buzzer\_state":fals}
I have contacted the manufacturer hoping that they can update the firmware but I am not holding my breath. Is there a way that I can just correct the string by inserting the "e".
Thanks
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### Author:  [@mickym2](https://discourse.nodered.org/u/mickym2)
#### Post date: [20 February 2022 13:31 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693/2 "2022-02-20T13:31:05Z")
You can just use a change node as long as this remains a string and replace fals to false.
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### Author:  [@GrantWise](https://discourse.nodered.org/u/GrantWise)
#### Post date: [20 February 2022 13:33 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693/3 "2022-02-20T13:33:44Z")
Thanks, after reading some of the other discussions I have just found something similar and change has worked.
Appreciate the help
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### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [20 February 2022 13:48 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693/4 "2022-02-20T13:48:36Z")
For information purposes only.
Replacing "fals" with "false" does not appear to be the correct solution.
output -
`{"n_channels":4,"n_alarms":10,"timestamp":1645370661,"battery":5.89,"value_channels":[0.0,0.0,28.1,0.0],"alarms":[falsee,falsee,falsee,falsee,falsee,falsee,falsee,falsee,falsee,falsee],"buzzer_state":false}`
but if you replace "fals}" with "false}"
output-
`{"n_channels":4,"n_alarms":10,"timestamp":1645370661,"battery":5.89,"value_channels":[0.0,0.0,28.1,0.0],"alarms":[false,false,false,false,false,false,false,false,false,false],"buzzer_state":false}`
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [6 March 2022 13:48 UTC](https://discourse.nodered.org/t/incorrectly-formatted-json-string/58693/5 "2022-03-06T13:48:43Z")
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