Here's the details you'll need to know (please read carefully);
- As with mining and placing spawners players must be Citizen rank or above.
- To change a spawner to a different type use: /spawner [mob]
- They can only be changed into one of the mineable types;
- Zombie, Skeleton, Spider & Cave Spider.
- You can change either placed spawners that you are looking at or ones in your hand.
- Changing the type of a spawner costs $5000, you will not charged if you try and change a spawner to the type it is already.
- The cost is per use of the command, so if you are holding stacked spawners you can change all of them to the same type for the same price as one placed spawner.
- Spawners can only be changed in the main world and Veteran World.
Important: Region permissions are ignored when changing spawner type, this means other players can change your spawners even if they do not have build permission in your area. Due to the cost of the command this is unlikely to be an issue, however, it's a good idea to keep your spawners secure and build in a way that protects them from this possibility.
Enjoy!