Double-tap issues

[TripsLetash]

if SERVER then
hook.Add("KeyPress","Sprint",function(ply,key)
    if key != IN_FORWARD then return end
    if ply.lastPress then
        if ply.lastPress+0.5 > CurTime() then            
			chat.AddText(tostring(ply:GetNWBool("Sprinting")) .. "Double-tapped")
            ply.lastPress = nil --end the 'timer' (it will start again when they press W next time)
			if ply:KeyDown(IN_FORWARD) then
			chat.AddText(tostring(ply:GetNWBool("Sprinting")) .. "Key Still down!")
			ply:SetNWBool("Sprinting", true)
			else
			chat.AddText(tostring(ply:GetNWBool("Sprinting")) .. "No longer down!")
			end
        else
            ply.lastPress = CurTime() --they didnt tap the second time fast enough so we reset the 'timer'
			ply:SetNWBool("Sprinting", false)
			chat.AddText("No longer down!")
        end
    else
        ply.lastPress = CurTime() --start the tap 'timer'
    end
end)
end

function plymeta:SetSpeed(slowed)
   local mul = hook.Call("TTTPlayerSpeed", GAMEMODE, self, slowed) or 1
   if slowed then
      self:SetWalkSpeed(120 * mul)
      self:SetRunSpeed(120 * mul)
      self:SetMaxSpeed(120 * mul)
   else
	  if self:GetNWBool("Sprinting") then
		if self:GetNWInt( "FStamina" ) <= 0 then
			self:SetWalkSpeed(220 * mul)
			self:SetRunSpeed(220 * mul)
			self:SetMaxSpeed(220 * mul)
		else
			self:SetWalkSpeed(350 * mul)
			self:SetRunSpeed(350 * mul)
			self:SetMaxSpeed(350 * mul)
		end
	  else
		self:SetWalkSpeed(220 * mul)
		self:SetRunSpeed(220 * mul)
		self:SetMaxSpeed(220 * mul)
	  end
   end
end

I'm hoping someone could tell me what I'm missing here. As far as I can tell ,the proper checks are there? However, it won't change my Speed :c
This is in TTT, just so you know. These are the only two changes I have for now. (I'm not getting any lua errors, however, I'm not sprinting either)

[G😹nz😻]

This's the stamina code from coderhire? 2 guys asked me to fix that before talk to the addon author...

[TripsLetash]

It is not actually, It's something I'm writing myself.