NPC dialogue script shows the wrong text

[DybalaplaysYT (nightreign)]

1. What do you want to achieve?
   Dialogue with the NPCs using click detector and guis
2. What is the issue?
   When I use two NPCs, When I finish chatting to one then chat to the other, this happens:
   
   
   In the video, Vegeta is supposed to say:
   
   
   
   but instead he just uses Piccolo’s line

script inside Piccolo’s click detector

script.Parent.MouseClick:Connect(function(playerclicked)
	game.ReplicatedStorage.NPCQuest:FireClient(playerclicked,"Piccolo","Hmph. What is it.","Can you train me?","This feature is coming soon. So no, I'm not training you.","Nothing, sorry.",script.Parent.Parent.Parent.Parent)
end)

script inside Vegeta’s click detector

script.Parent.MouseClick:Connect(function(playerclicked)
	game.ReplicatedStorage.NPCQuest:FireClient(playerclicked,"Vegeta","It's me, The PRINCE OF ALL Saiyans. What do you want.","wot","WHAT DO YOU MEAN WHAT? ARE YOU TRYING TO DISRESPECT ME?","Nothing, sorry.",script.Parent.Parent.Parent)
end)

script inside gui

game.ReplicatedStorage.NPCQuest.OnClientEvent:Connect(function(npcname,npcdialogue1,choice1,npcdialogue2,choice2,npc)
	local camera = game.Workspace.CurrentCamera
	camera.CameraSubject = npc.HumanoidRootPart
	script.Parent.Visible = true
	script.Parent.Choice1.Visible = true
	script.Parent.Choice2.Visible = true
	script.Parent.NpcText.TextVal.Value = npcdialogue1
	script.Parent.NameTe.Text = npcname
	script.Parent.Choice1.Text = choice1
	script.Parent.Choice2.Text = choice2
	
	script.Parent.Choice1.MouseButton1Click:Connect(function()
	    script.Parent.NpcText.TextVal.Value = npcdialogue2-- the text has a value in it that has a while true do script so that it matches the dialogue text
		script.Parent.Choice1.Visible = false
		script.Parent.Choice2.Visible = false
		wait(3)
		script.Parent.Visible = false
		script.Parent.NameTe.Text = ""
		script.Parent.NpcText.TextVal.Value = ""
		camera.CameraSubject = game.Players.LocalPlayer.Character.Humanoid
	end)
	
	
	
	script.Parent.Choice2.MouseButton1Click:Connect(function()
		script.Parent.Visible = false
		script.Parent.NameTe.Text = ""
		script.Parent.NpcText.TextVal.Value = ""
		camera.CameraSubject =  game.Players.LocalPlayer.Character.Humanoid
	end)
	
end)