No worries, your English is good! And yeah, now that you mention it like that, the ability of the AI to create custom entities based on the situation was pretty neat.
Right now, how I feel like it works, is that the AI doesn't actually manage the entity list itself. Rather, the game checks if the response contains the name of the entity in the response and then it adds that entity to the list. An update that adds something like a 4th prompt to bring back the old functionality would be really nice.
I guess, right now the only way you can work with it is to just tell the AI to "name" entities, to give them unique traits or to just make some up if the situation allows it. They probably won't show in the entity list, but it can probably be built into the narrative story at least.