How to make a dummy that changes appearance, but there is an error?

Hi! I want to create a TextBox that you can enter an username for change the appearance of a Dummy. First, the code changes the dummy to the text of the TextBox (I put the username before run the game, but when I edited text if I were player it doesn't work). But there is an error in the last line. Error: Attempt to connect failed: Passed value is not a function.

local Players = game:GetService("Players")
local Dum = workspace.Dummy
local Username = script.Parent.Text
local ID = Players:GetUserIdFromNameAsync(Username)
local function CreateOfflineCharacter(UserID, Dummy)
	
	local Appearance = Players:GetHumanoidDescriptionFromUserId(UserID)
	Dummy.Humanoid:ApplyDescription(Appearance)
end

script.Parent:GetPropertyChangedSignal("Text"):Connect(CreateOfflineCharacter(ID, Dum))

I think I'm not using correctly the function. I tried script.Parent:GetPropertyChangedSignal("Text"):Connect(function() CreateOfflineCharacter(ID, Dum) end) This alternative code don't give me errors, however it doesn't do anything. Can you help me, please?

Try detecting when the player presses the Enter key on the text box.

local Players = game:GetService("Players")
local Dum = workspace.Dummy
local Username = script.Parent.Text
local ID = Players:GetUserIdFromNameAsync(Username)
local function CreateOfflineCharacter(UserID, Dummy)

    local Appearance = Players:GetHumanoidDescriptionFromUserId(UserID)
    Dummy.Humanoid:ApplyDescription(Appearance)
end

script.Parent.FocusLost:Connect(function(enterPressed) 
	if enterPressed then
		CreateOfflineCharacter(ID, Dum) 
	end
end)