How activate one smart relay in my network without know his address

Thunkable Discuss
#1

I have a relay in my network that is activated by http: //192.168.0.#/gpio/1
and I want when I press a button to activate that relay without knowing its ip address. How can I do that?

Sin%20t%C3%ADtulo-3
Sin%20t%C3%ADtulo-31360×768 203 KB

and this is what i did