Hey, thanks for the response.
I also initially thought it was an issue with the get/set property actions and was going to use the linker wizard. However, I did some additional testing, and it turns out this is not the case. Both actions function perfectly on their own in my builds. It's only when I try to use a scene object that things break. I suspect it may be a bug within Playmaker or Unity itself.
I've attached an image of what it is I'm trying to do.
I should also mention I'm using Playmaker version 1.9.0, Unity version 2020.1.6f1, and exporting my project for PC only.