Lua: Play sound once when holding down

[Endus322]

I have an entity that I want to play a sound when it is used, but I want the sound to only play once at all, or to only play once when you hold it down

Code:

function ENT:Use(activator, caller)
	-- Whenever a player uses the entity
	self:SetMoveType(MOVETYPE_NONE)
	self:SetCollisionGroup(COLLISION_GROUP_PASSABLE_DOOR)
	
	sound.Play("UI/buttonclick.wav", self:GetPos(), 75, 100)

Thank you, Endus322

[Benn20002]

Put

self:SetUseType(SIMPLE_USE)

inside ENT:Initialize.