[PBS Question] Location Evolution

Hi there! Fledgling fangame maker here. I'm working on a new Pokemon in the PBS files that evolves depending on the map it's on, but on a broader scale (desert maps, city maps, forest maps, etc.), and I was wondering if it was possible to define multiple map IDs in the evolution methods. As in, say if there were two Mossy Rocks and I could bring an Eevee to either of them and it would evolve into Leafeon. Would this work in PBS or do I need to edit scripts? Or, is there an easier way to do this that I'm overlooking?

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