Good afternoon, I would like to know how can I make my block break when removed the block that is just below it, my friend and I tried a few things but nothing worked, you have any idea?

Or check that the block below does not have a solid top surface. Passions could push a non-air block under it.

Use onNeighbourBlockChanged, check if the block below you is air. If so, remove the block.

 

Thank you friend,  for those who have the same doubts I used the following code:

 

@Override
 public void onNeighborBlockChange(World world, int x, int y, int z, Block block)
 {
	 if(world.getBlock(x, y - 1,z) == Blocks.air)
 {
	 world.setBlockToAir(x, y, z);
 }

 super.onNeighborBlockChange(world, x, y, z, block);
 }

That would outright destroy your block (which is fine, snow layer does this).  If you wanted it to drop stuff (torch, tall grass, etc.) you'd want to make the block break instead.