LJForge

This is my code: private void addCreative(Register<Block> event) { if (event.getTab() == CreativeModeTabs.BUILDING_BLOCKS) event.register(EXAMPLE_BLOCK); } Cannot resolve symbol 'Register' How do I fix? I have tried the import import net.minecraftforge.registries.Register; but it doesn't work. I also have these problems on that same code: Cannot resolve method 'getTab()' Cannot resolve method 'register(RegistryObject<Block>)'