# toUpper msg.payload
**URL:** https://discourse.nodered.org/t/toupper-msg-payload/21878
**Category:** General
**Created:** [17 February 2020 17:58 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878 "2020-02-17T17:58:46Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@gbuurman](https://discourse.nodered.org/u/gbuurman)
#### Post date: [17 February 2020 17:58 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/1 "2020-02-17T17:58:46Z")
Hi all, While I am replying to and with Colin (thanks) I am getting another problem:
TypeError: msg.payload.toupper is not a function
Help. first, it worked like a charm and after some reformatting JSON (is ok) I am having this error.
Any suggestion is welcome.
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### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [17 February 2020 18:00 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/2 "2020-02-17T18:00:39Z")
`toUpper` is a function on String type objects.
If you pass your message to a Debug node, you can check if msg.payload is a string or not.
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [17 February 2020 23:10 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/3 "2020-02-17T23:10:34Z")
Isn't it `.toUpperCase()`?
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### Author:  [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)
#### Post date: [17 February 2020 23:14 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/4 "2020-02-17T23:14:44Z")
I thought `toUpper` was C++, not javascript??
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### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [17 February 2020 23:49 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/5 "2020-02-17T23:49:35Z")
Yup toUpperCase()
> **[String.prototype.toUpperCase()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase)**
>
> The toUpperCase() method returns the calling string value converted to uppercase (the value will be converted to a string if it isn't one).
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### Author:  [@gbuurman](https://discourse.nodered.org/u/gbuurman)
#### Post date: [18 February 2020 07:44 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/6 "2020-02-18T07:44:31Z")
sorry guys, you where right. It should be to uppercase. I should keep myself to one (1) programming language.
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [18 February 2020 13:47 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/7 "2020-02-18T13:47:18Z")
And don't forget that JavaScript function and variable names are **CASE SENSITIVE**. 😀
> [@gbuurman](#):
>
> I should keep myself to one (1) programming language.
Yup, JavaScript rules them all! 🙀 🤣
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [18 April 2020 13:47 UTC](https://discourse.nodered.org/t/toupper-msg-payload/21878/8 "2020-04-18T13:47:19Z")
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