Problem deleting contact in API (HTTP request)

I’m trying to delete a contact with a http request node, but i can’t use variables from others node inside the url of the http request.
I’m trying to do this →

https://rest.messagebird.com/contacts/{{$node[“Contactos”].json[“items”][0][“id”]}}

I cant put variables in the URL, an example to this URL with a real id:

https://rest.messagebird.com/contacts/aa450956b3d444a054f285ggh5094efb

Is there a way to insert in the URL a variable that has no key, only value.
Because in the parameters it always asks for name and value.

The node is in DELETE mode

I have already managed to solve it, I needed to click on ‘add expression’, what a beginner’s error ajajaaj.

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