Sorry for the late response. I was able to get a solution working that doesn't require your plugin although I'll keep it in mind if it case it's needed later.
The intention behind that the skill and status effect is that statuses have a duration and a potency.for example burn has its duration go down by 1 each turn and deals damage at the end of turn equal to its potency. I wanted it so that how much potency is added can vary depending on the skill and additional strategy can form around that.
I'm not much of a programmer and I'm new to working with JavaScript specifically so that explains any weird programming things you saw what you suggested did actually work before someone else gave me another solution that worked a bit better.
So yeah thanks to you I can work with JavaScript a bit better now and I've been able to make a few other statuses work as intended. thank you