This function returns an event that behaves exactly like the Changed event, except that the event only fires when the given attribute changes. It’s generally a good idea to use this method instead of a connection to Changed with a function that checks the attribute name. Subsequent calls to this method on the same object with the same attribute name return the same event.

It is similar to Instance/GetPropertyChangedSignal but for attributes.

For example, the following code snippet will return a signal that fires the function Instance/AttributeChanged when the instance’s InitialPosition attribute changes. Note that this code sample does not define Instance:

local function attributeChanged()
    print(“Attribute changed”)
end

instance:GetAttributeChangedSignal("InitialPosition"):Connect(attributeChanged)

See also

• Instance/SetAttribute, sets the attribute with the given name to the given value
• Instance/GetAttribute, returns the attribute which has been assigned to the given name
• Instance/GetAttributes, returns a dictionary of string → variant pairs for each of the instance’s attributes
• Instance/AttributeChanged, fires whenever an attribute is changed on the instance