Backend script note issues

[Geekswordsman]

I'm running Trilium v0.47.7.

I'm trying to create a backend script that will fire when a note is created. The workflow I'm looking to do is:
The parent node has a child template.
The child template has ~runOnNoteCreation attribute defined, pointing to a JS backend note.
The JS backend will look up a label on the parent node, increment it, and set the title of the new note based on that.

The problem I'm running into is that my JS backend doesn't want to fire. My initial tests have tried:
console.log("Test");
and
api.showMessage("Test");

and neither works. If I attempt to run the script with ctrl-enter, the first (console.log) does nothing but reports it ran, the second (api.showMessage) returns an error "Error when calling POST script/run/...."

I've even tried changing this to fire similar to the task manager template and on runOnAttributeChange, but still nothing happens. I feel like I'm missing something, but not sure what.

(edit - fixed a typo)

[Geekswordsman]

Solved this myself. Apparently runOnChildNoteCreation and runOnNoteCreation do not execute from a template (and api.showMessage is not an actual method; but api.log is which worked).

I solved this by setting the ~runOnNoteCreation relationship on the parent note and not the template.
I also found that api.originEntity.getNote() (as referred to in other examples on these discussions) is no good. originEntity is itself a note and .getNote() is not a real method.

I now have my backend script up and running and working perfectly.