Implement a hook in erlang

hi every one, i am an Erlang dev
i have a container like this

i want to write a hook which invoked whenever an element in ls1 is created, the hook will add an item with same name in ls2 and auto-increase id, but i cant find any examples for implementing hook in erlang ? Would you give me an example ? thanks so much

There is an example of a transform as an embedded Erlang application in examples.confd/internal_econfd/embedded_applications/transform in the release. A hook is implementation-wise basically a subset of a transform (no “read” callbacks, only the “write” callbacks that you actually want), plus a different annotation in the YANG module, of course.

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thanks for your reply i will try it !