Updating Model Tutorial

First Off

This will not work if you don't wish to have your model published. You can either create a simple script or apply it into this. Now create a blank model, a blank script in the model, and IntValue in this model called "Version", change the value to "2". Publish this as a model. Now create a new script and dont bother about the other model. Create another IntValue called "Version", put it in this new script. Make the value "1"

Creating the script

Example

CurrentVersion = script.Version.Value
ScriptName = "Script" -- Name of the script in the published model
Location = game.Workspace -- Location of where this script is.
ModelID = 0000 -- Change this to the model id of the model you created earlier

function CheckUpdate() -- You can either put this in a loop, or call it once. I reccomend calling it once.
InsertService = game:GetService("InsertService")
Model = InsertService:LoadAsset(ModelID) -- This is where the model being public comes in.
Version = Model.Version.Value
   if CurrentVersion < Version then
      Model[ScriptName]:clone().Parent = Location
   end
end

--Now you can add your script anywhere else here

Now just copy this scripts contents and paste it into the Model's script. Now just update the model and leave this in your place. It should work. If not, or there are errors, use the discussion.