Get number of a Mqtt return

I get the following value from an MQTT server via # from which I want to transfer the temperature in Celsius to a msg.payload and then display it later.
How do I get the value?

This is the return of the Mqtt request in the debug Window:

fbtemp/status/temperature:0 : msg.payload : Object
{ id: 0, tC: 26.6, tF: 79.9 }

Thanks for help

In a change node
set msg. payload
to msg. payload.tC

But you may not need to move it to payload, all depends where you want to display it.

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