Kansai wide pass to Amanohashitate

I am planning to get the Kansai wide pass and hoping to go to Amanohashidate. Do I need to get any ticket train? Or can I just use my kansai wide pass? Thanks in advance

Seat reservations are mandatory on the limited express trains, so you should make seat reservations in advance. More details:
https://www.japan-guide.com/e/e2361_08.html#seat