I want add property in editor with my customAIPath

[Karosian]

I created CustomAIPath class inherited AIPath to move backward and check some path nodes when finding completed.

namespace Pathfinding
{
	public class CustomAIPath : AIPath
	{
		public bool moveBackward;
	        ....
        }
}

but I can’t see property in editor because AIPath using custom editor.

so I try to add property when CustomAIPath added.

var isCustomAIPath = typeof(CustomAIPath).IsAssignableFrom(target.GetType());
			if(isCustomAIPath)
			{
				PropertyField("moveBackward");
			}

but cannot find CustomAIPath in AIBaseEditor.cs

how can I add property?

CustomAIPath.cs file in default project
AIBaseEditor.cs file in AstarPathfindingProjectEditor project