No access to msg.payload Object

General
1

I'm wondering why I don't have access to the msg object. As you can see in the attachment, the object exists and is populated.

For example, when I try to output “msg.payload.outHumidity” in a function, I get “undefined.” I don't understand this.

Bildschirmfoto vom 2026-02-23 18-32-04
Bildschirmfoto vom 2026-02-23 18-32-04321×1186 63.6 KB

2

More info is required, can you export you example flow.

How to import/export a flow

Then post here following these instructions

In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)

``` 
   code goes here 
```

You can edit and correct your post by clicking the pencil :pencil: icon.

See this post for more details - How to share code or flow json

3

what does this mean? how are you "outputting" this?

where is that debug message coming from - before the function or after it? (i.e. what creates that data)

if you want to use msg.payload.outHumidity in the function then you can just do so:

const outHumidity = msg.payload.outHumidity
const inHumidity = msg.payload.inHumidity
const outHumidityNum = +outHumidity
const inHumidityNum = +inHumidity
node.warn({
   outHumidity,
   outHumidityNum,
   inOutHumidityDiff: outHumidityNum - inHumidityNum
})

Here is the docs for working with functions: Writing Functions : Node-RED