JSON Exporter HDA not outputting files when within Unity

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Joined: Dec. 2021
Hi! So I'm pretty much using this tutorial here: https://youtu.be/9C1ZGnF2Y6A [youtu.be]

I built an HDA based on this tutorial, I just made slight changes to it in order to fit my needs (using an object merge node to be able to choose where I get the data from inside Unity). I basically need to use this to export the points I scattered using the Heightfield Scatter node into a JSON file.
Everything works really well when I'm using this inside of Houdini, the JSON file gets exported to the right location and inside I can find all the data I wanted. However, when I try using the exact same thing inside of Unity, nothing gets exported. The HDA itself seems to be working fine, it's just that there's no JSON file getting exported.

Here are a couple of screenshots showing my JSON HDA graph and its parameters: https://imgur.com/gallery/XO03Ypt [imgur.com]

What I want to happen in the end is to be able to use this HDA together with my terrain generator HDA inside of Unity. I should be able to input the terrain generator HDA into that object merge input parameter and then just hit export and output a JSON file including all my points on that piece of terrain.

Is there something I'm missing? Is it Unity at fault - does it not recognize Python scripts inside the HDA or something?
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