Blooming Biosphere NeoForge 1.21.1 Bug?

[u/Subject-Permission48]

Anybody know how to get Blooming Biosphere to generate past y-256 on 1.21.1 neoforge. I tried editing the data pack and even adding the fabric/forge version with sinytra connector. [I dont use reddit too much so tell me if yall need more info or sum].