The script for the explosion of the NPC when choosing a dialogue chose does not work?

local telo = workspace.karsblyat.HumanoidRootPart
script.Parent.DialogChoiceSelected:connect(function(player,choice)
        local boom = Instance.new("Explosion", telo)
        boom.Parent = telo
end)

According to my idea, this script should explode the NPC with which the dialogue occurs, when choosing the parent choice, but it just does not work. HEEEEEEELP