This is the right place for Ren'Py help. Please ask one question per thread, use a descriptive subject like 'NotFound error in option.rpy' , and include all the relevant information - especially any relevant code and traceback messages. Use the code tag to format scripts.
Think of buying items, you would have a bar for each item. Each item would have a cost. You would only have a specific amount of cash.
The user might spend half of their funds on one item, leaving them less for others. Can I adjust a bar based on these limits?
Also, how should I display the text of the value in the screen with the bars?
- Shigeru Miyamoto