Setting block hardness not working

I'm trying to alter a block's hardness with custom code, and I can't get it to work. Here is my code:

package net.mcreator.test.procedures;

import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
import net.minecraftforge.common.MinecraftForge;

import net.mcreator.test.Test2ModElements;

import java.util.Map;
import java.util.Collections;

@Test2ModElements.ModElement.Tag
public class TestProcedure extends Test2ModElements.ModElement {
    public TestProcedure(Test2ModElements instance) {
        super(instance, 2);
        MinecraftForge.EVENT_BUS.register(this);
        
    }

    public static void executeProcedure(Map<String, Object> dependencies) {
    Blocks.dirt.setHardness(1000.0F);
         Blocks.obsidian.setHardness(1.0F);
    }

    @Override
    public void init(FMLCommonSetupEvent event) {
        this.executeProcedure(Collections.emptyMap());
        
    }

    @EventHandler
    public void init(FMLInitializationEvent event)
    {
     Blocks.dirt.setHardness(1000.0F);
     Blocks.obsidian.setHardness(1.0F);
    }

}
 

I tried putting the .setHardnes() in all of the functions, nothing worked.