I have constructed a flow which ends up turning a json string into an object with variables as follows: payload: array[1] 0: object DeviceId: "a name and number" Site: "a city name" UTC: "2019-07-10 07:54:49" State: "start" I am trying to use these variables (DeviceId, Site, UTC and State) …

By default debug nodes only outputs payload objects msg.payload[0].DeviceId should provide an output - if you configure the debug node to display the complete msg

There's a great page in the docs that's worth a read. https://nodered.org/docs/user-guide/messages This page explains how to use the tooltips in the debug node to ensure you get the right path to any bit of data.

[image] bakman2: msg Thanks for your reply. I almost always use the "complete msg object" way of using debug nodes, so that is not the explanation. I tried msg.payload[0].DeviceId, but still nothing; 10.7.2019 13.20.19 node: funktionsdebug efter msg : Object object _msgid: "1234XYZ" t…

Excellent, thanks. I had forgotten about that. The strange thing is, though, that even when I copy the path to DeviceId, which is allegedly "payload[0].DeviceId", I get nothing. Or actually, I get the error that this is not defined. I then put "msg." in front of it, but then there is just no trace o…

[image] KMBN: Which is the correct way, if it is not one of the following? msg.payload.0.DeviceId (the error here is that the function node I am using does not like the 0) msg.payload.DeviceId (no output) msg.payload[0] (no output) msg.payload[0[DeviceId]] (no output) Can you share what y…

Oh, just shoot me already. In order to find out why this was not working, I was defining the variables separately instead of just putting them inside the string I need to send. What I thought was that the debug node would display the variables being defined in the node, but of course it isn't - at …

[image] KMBN: AND the variable is shown in the debug pane. The debug pane doesn't show variables, it shows the contents of the message passed to it.

Hi all! Just working on the same issue with no luck. I have this error. [image] ...when i want to access this element. [image] I've written a function to "get" that value only with no luck. [image] Any help out there? Thanks a lot!

You have a space in the variable name. Use the copy path button in the debug window to avoid the school boy errors. :wink:

Actually the space might be a graphical glitch. Regardless, the path is wrong - use the copy path button by hovering the item of interest in the debug window to avoid mistakes. If you don't know what I mean, read the docs - "working with messages"

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Retrieving variables from payload object

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Steve-Mcl 1 June 2021 14:58 15

In a function, you need to be explicit - include msg.

e.g. msg.payload.x.y.x

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Retrieving variables from payload object

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