So here is the script, it stack ends on the first line
bin = script.Parent.Main.Base
Output says that Base is not a valid member of Model
The scripts parent is called Flag.
There is nothing called Model in Flag.
How do I fix it?
Base is not a valid member of Model
That doesn't mean that Base is not a valid member of a child named Model. Model
is the ClassName of the object you're searching in. Maybe you're searching in the wrong thing? Can you give a screenshot of your hierarchy? (I'll update this answer if you do ;) )