Scripts

Hi, do you remember in the last mission for Arantir, there were cities where you could only upgrade creatures to one level? I have three questions.
1. How do I do that?
2. Can this be done for other factions?
3. Can I only allow the 1st upgrade, and not the 2nd?

In the editor, select the city, and on the left in the properties tree, find CreaturesUpgradesFilter, and expand it. To prevent the 1st upgrade, add lines to ForbiddenBasicUpgradeTiers (right-click - Add) and enter the level of the desired creature in them. Accordingly, to prevent the entire upgrade path, you need to add 7 elements and specify levels from 1 to 7 in them. ForbiddenAlterUpgradeTiers - it's all the same, only for preventing the 2nd upgrade. You can also combine them.

Added 23 hours 32 minutes later
Has anyone encountered this, or does anyone have any ideas?
The game crashes when using MoveHeroRealTime or even CalcHeroMoveCost on an adjacent, empty cell. It doesn't crash at the beginning of the map, but in the second half, closer to the end.