Help to create Custom DDNS script.

[KeyMag]

Hi all. Can any one help me make a script for my host? The website of their website has an instruction manual for developers. https://www.nic.ru/dns/service/dns_hosting/en/dynamic_dns_for_developers.html
I ask to help with the decision of the given question. Thank you in advance. Sorry for my language.

 

[jauling]

Have you looked here?
https://github.com/RMerl/asuswrt-merlin/wiki/Custom-DDNS
https://github.com/RMerl/asuswrt-merlin/wiki/DDNS-Sample-Scripts

 

[KeyMag]

Have you looked here?
https://github.com/RMerl/asuswrt-merlin/wiki/Custom-DDNS
https://github.com/RMerl/asuswrt-merlin/wiki/DDNS-Sample-Scripts

Yes I looked but still did not understand how to make the script. That it is necessary to write and how it should look.