# Filtering the highest value key from an object
**URL:** https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257
**Category:** General
**Created:** [7 January 2022 14:14 UTC](https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257 "2022-01-07T14:14:10Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@bradds](https://discourse.nodered.org/u/bradds)
#### Post date: [7 January 2022 14:14 UTC](https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257/1 "2022-01-07T14:14:10Z")
Hi.
I am trying to filter out the key with the highest number from this object.
I have tried to do it with a split node, but it does not give the key, just the number.
Been searching the forum but nothing I found works.
Does anyone know how to do this with a quick function node so that the output will show the "key AND number" of the highest value only?
In this case the output of msg.payload would be (neutral : 0.976....)
Thanks in advance.
---
### Author:  [@shrickus](https://discourse.nodered.org/u/shrickus)
#### Post date: [7 January 2022 14:35 UTC](https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257/2 "2022-01-07T14:35:50Z")
Set up a `change` node to use this JSONata expression (the `J:` option):
```
payload.expressions.$spread()^(>*)[0]
```
I know, so readable, right? wth?!?
In human terms, it "spreads" the object fields into an array of single-field objects, then sorts them descending by value, and returns only the first one. If you have not looked at JSONata, it uses a very powerful lambda expression syntax to restructure JSON objects/arrays (similar to using XPath for XML data). It takes an hour or so to wrap your head around, but well worth knowing how to use in node-red, imo.
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### Author:  [@bradds](https://discourse.nodered.org/u/bradds)
#### Post date: [7 January 2022 14:47 UTC](https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257/3 "2022-01-07T14:47:32Z")
> [@shrickus](#):
>
> `payload.expressions.$spread()^(>*)[0]`
Thanks for the quick response and detailed expanation @shrickus
That was just what I wanted, easy when you know how...
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [21 January 2022 14:48 UTC](https://discourse.nodered.org/t/filtering-the-highest-value-key-from-an-object/56257/4 "2022-01-21T14:48:26Z")
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