Yeah i have problem i use entityjs to make a fish from unusualfish spawn only in enhanced celestia blue moon by using the tag it possible to run and work
my script
EntityJSEvents.spawnPlacement(event => {
event.and('unusualfishmod:ripper', (entitypredicate, levelaccessor, spawntype, blockpos, randomsource) => {
return levelaccessor.level.dimension.getTags().contains('#enhancedcelestials:blue_moon');
});
});





