# Help expressing a value in Json?
**URL:** https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145
**Category:** General
**Created:** [19 June 2022 20:06 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145 "2022-06-19T20:06:41Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Xenos](https://discourse.nodered.org/u/Xenos)
#### Post date: [19 June 2022 20:06 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145/1 "2022-06-19T20:06:41Z")
This is an existing issue, I don't think I'm asking the question properly.
I have no issue capturing the data or sending data to my controller. My issue is I cant seam to figure out how to send my captured date (payload) to my output string. what i need to automate is the changing of the "value"
The string I send to my controller is
What ever I set in "value": "X" presently ( "value": "85"), get written no issues.
how do i make this my payload value?
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### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [19 June 2022 20:37 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145/2 "2022-06-19T20:37:13Z")
The quick way is to change the 5 to say `msg.payload`, then change the type of the field in the Change node rule to be `Expression` rather than `JSON`
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [19 June 2022 20:38 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145/3 "2022-06-19T20:38:03Z")
What you have shown is static JSON. You need something dynamic. You have a number of choices.
One way would be to use the JSONata feature instead of plain JSON. That would let you substitute `payload` as a property instead of your fixed `"85"` string.
Another way would be to have 2 changes in your change node. The first to create the JSON and the second to `set` `msg.payload.propertyReferences[0].value` to `payload1.
UPDATE: My first example is what Nick just described.
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### Author:  [@Xenos](https://discourse.nodered.org/u/Xenos)
#### Post date: [20 June 2022 01:21 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145/5 "2022-06-20T01:21:47Z")
Perfect, Got it...
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [19 August 2022 01:22 UTC](https://discourse.nodered.org/t/help-expressing-a-value-in-json/64145/6 "2022-08-19T01:22:24Z")
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