i have no idea if this is the right place and if not direct me there please

i was wondering something. i just got the pyro mine and started using it, can you only have one pyro mine down? i have the extra landmine buff, but cant place more then one.

The ability is for land mines not pyro mines, so you can't plant two pyro mines, but you can plant two landmines and one pyro mine if you have them both equiped