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**Category:** General\
**Created:** [26 February 2020 20:22 UTC](https://discourse.nodered.org/t/html-post-to-msg-payload/22304 "2020-02-26T20:22:49Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@Fredje](https://discourse.nodered.org/u/Fredje)\
**Post date:** [26 February 2020 20:22 UTC](https://discourse.nodered.org/t/html-post-to-msg-payload/22304/1 "2020-02-26T20:22:49Z")
I can send through my smartphone a html POST to node red to a .msg payload, it's the number 38 in the attachement,
With which function can i make a msg.payload true if the number is 38, and the msg.payload false if it is not number 38 (or something else), i don't know how i must read the number 38 out of the .msg payload
thank you
frederick
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**Author:**  [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [26 February 2020 20:50 UTC](https://discourse.nodered.org/t/html-post-to-msg-payload/22304/2 "2020-02-26T20:50:51Z")
You can use a Change node configured like this
That sets msg.payload to the result of the test `payload=38`. Note that because the expression is JSONata not javascript it is a single `=` not double.
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**Author:**  [@system](https://discourse.nodered.org/u/system)\
**Post date:** [26 April 2020 20:50 UTC](https://discourse.nodered.org/t/html-post-to-msg-payload/22304/3 "2020-04-26T20:50:55Z")
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