How do i detect a Gui Textbox changed?

My question is that, i'm trying to detect if a text of a TextBox is changed and i don't know a way of doing that. Im trying to do it so when a textbox text is changed it uses Instance.new to create as NumberValue and set the value to the text. If anyone could help thanks :)

Ok, so. Get familiar with the :GetPropertyChangedSignalChanged() function. This requires the property you want to be checked for, such as :GetPropertyChangedSignal("Text"), you then need to connect that to a function

Gui.Textbox:GetPropertyChangedSignal("Text"):Connect(function(textNow) --this function doesn't return anything, so "textNow" won't work
	textNow = Gui.Textbox.Text --refer to it back over here, now it will
	print(textNow)
end)

You can check if the text of a textbox has been changed using the :GetPropertyChangedSignal() event and setting the signal to check the text of the box.

Local Script under the TextBox

script.Parent:GetPropertyChangedSignal("Text"):Connect(function()
	print(script.Parent.Text)
end)

The above example prints the text of the box as it changes