Current questions and answers regarding the map editor.

Hello everyone, fans of Heroes 5!)) I have a question. I want to create my own campaign, but when I try to add a map to the campaign list, the "Create Company" function doesn't recognize it; it doesn't appear in the dropdown list. The map is a single-player map with a quest, and it works – I can load it and play it in the scenarios section of the game. What do I need to do for the campaign editor to recognize my map? Please advise.