This is a very old and over- (or under-) engineered spawner, wasting a lot of space really. The guide linked in the description explains how to build it and how it works along with a few videos, but you may want to check the more recent spawners (this one in particular: https://steamhost.cn/steamcommunity_com/workshop/discussions/18446744073709551615/1699415798773028799/?appid=280790 ) for a compact spawner that also spawns many different mobs.

Technically, all you need to spawn a mob is the correct amount of blocks inside a chunk, anything else is just for the sake of aesthetics / pathing of the mobs - the Reference linked in the ESC screen from any world has pages dedicated to (almost all) mobs, from there you can check the spawn conditions and create your own custom spawners (just make sure you know where chunks are to fulfill the spawning requirements on each given chunk)

hey do i need all 1 - 5 and anything else to make this work?

You're welcome samson7770, please see the edit of the first post here: https://steamhost.cn/steamcommunity_com/workshop/discussions/18446744073709551615/3277925755438373686/?appid=280790

The new BP is linked there in the "Optional counting variation" section, let me know if you have any problems with it (in case, post there in the main thread).

thank you

Yes, I could make an addition like that. Perhaps tomorrow, God willing and cops allowing, samson7770

can you make a bp of the why you trap thim on the island and the release them win you were ready and the counter part to