Command
Difficulty Death Scaler provides the /difficultydeathscaler (you can also use the alias /dds) utility command.
Getting difficulty
You can get the global difficulty with /difficultydeathscaler get. You can also use the alias /ddsg (which is for Difficulty Death Scaler Global).
You can get the player difficulty with /difficultydeathscaler get [player].
You can also use the alias /ddsp to get your own difficulty (which is for Difficulty Death Scaler Player).
Setting difficulty
You must be OP to use these commands.
You can set the global difficulty with /difficultydeathscaler set global [number of death].
You can set the player difficulty with /difficultydeathscaler set player [player] difficulty [number of death].
You can also set the number of daily death with /difficultydeathscaler set player [player] daily-death [number of death].