Recreate Haunted Gold Mine

For some reason I can't make a custom building which behaves exactly as the haunted gold mine... I.E. you have to build over an existing gold mine. Instead it lets me build the new structure everywhere, BUT on an existing gold mine. But I want the opposite. If you need further info on the building or what I plan to do with it in order to help me please post and I will get back to you.

Thanks in advance.

Here's the setup: I made a custom ability based of the Tiny Farm item. I made it a hero abilty with levels which produce different levels of a building ( think more HP on higher levels ). You don't have to care about the resource management, the ability costs only mana and has a cooldown. That is intended.

So, now I changed the produced building to the stock melee haunted goldmine. Still it lets me build the mine everywhere, _but_ on goldmines. :(

Doesn't it work because it's produced by a hero? I also tried a different approach... I gave the hero the normal build structure ability ( build (undead)) and the only building the stock melee haunted goldmine. All the same... the mine can be built everywhere but on goldmines. Argh. :(

In the editor, I believe there is a field for "placement prevented by" correct? well, why don't you try preventing its placement on buildable and sea-pathable terrain (you may also try preventing its placement on air-pathable if you make the area over the mines non-air pathable [little pathing blockers anyone?]) I will say that this is just a suggestion, and I'm not 100% positive on its effectiveness, but I can see it's the only one you have. I wish the best of luck to you!

I know were to look, select haunted gold mine, scroll down to the "Path -" section and look for AI Placement Type; it is set to Resource. I guess its that that makes it only placeable on goldmines. Good Luck