How create a service child throught API

[conchi]

Hello,

I'm creating a script to create SERVICES in Zabbix through the API. My problem comes when I want to add a CHILD to said service. I don't know how to pass the TRIGGER that I want to use in the parameters.
I am working on a Zabbix 5.0.23 with an Ubuntu 18.04 OS.

Thanks in advance.

Best regards.