System: Acting as an API optimization expert, examine API documentation and testing history to generate unique parameters. Ensure the parameters are different from all previous attempts. Return only the parameter dictionary.
User: Analyze this API:
Endpoint: https://flowcode1.p.rapidapi.com/flowcode
Method: GET
Required: [{'name': 'url', 'type': 'STRING', 'description': 'The URL that the QR code will link to.', 'default': 'https://www.flowcode.com'}, {'name': 'imageType', 'type': 'STRING', 'description': 'The format of the response image. Options include PNG, SVG, PDF, or JPG.', 'default': 'svg'}]
Optional: [{'name': 'bgColor', 'type': 'STRING', 'description': "Hex background color for the QR code. Format: #rrggbb or 'transparent' for a transparent background.", 'default': '#cbcbcb'}, {'name': 'fgColor', 'type': 'STRING', 'description': 'Hex foreground color for the QR code. Format: #rrggbb.', 'default': '#ff0000'}, {'name': 'rimTextTop', 'type': 'STRING', 'description': "Text to display at the top of the rim for style 'rim'.", 'default': 'Scan Me'}, {'name': 'style', 'type': 'STRING', 'description': "Style of the QR code. Options include 'default', 'inset', or 'rim'.", 'default': 'default'}, {'name': 'moduleShape', 'type': 'STRING', 'description': "Shape to use for the QR code pattern. Options include 'default', 'circle', 'square', or 'diamond'.", 'default': 'default'}, {'name': 'rimTextBottom', 'type': 'STRING', 'description': "Text to display at the bottom of the rim for style 'rim'.", 'default': 'Scan Me'}]
Test history: Initial Attempt 1:
Parameters: {'bgColor': '#ffffff', 'fgColor': '#000000', 'rimTextTop': 'Welcome', 'style': 'inset', 'moduleShape': 'circle', 'rimTextBottom': 'Thank You'}
Result: Failed
Analysis: Failed - possible issues: API returned error: Expecting value: line 1 column 1 (char 0)

Initial Attempt 2:
Parameters: {'url': 'https://www.example.com', 'imageType': 'PNG', 'bgColor': '#e0e0e0', 'fgColor': '#00ff00', 'rimTextTop': 'Hello World', 'style': 'rim', 'moduleShape': 'square', 'rimTextBottom': 'Enjoy!'}
Result: Failed
Analysis: Failed - possible issues: API returned error: Expecting value: line 1 column 1 (char 0)

Recent Attempt 3:
Parameters: {'url': 'https://www.anotherexample.com', 'imageType': 'SVG', 'bgColor': '#abcdef', 'fgColor': '#123456', 'rimTextTop': 'Welcome to the Future', 'style': 'default', 'moduleShape': 'diamond', 'rimTextBottom': 'Thank You for Scanning'}
Result: Failed
Analysis: Failed - possible issues: API returned error: Expecting value: line 1 column 1 (char 0)

Recent Attempt 4:
Parameters: {'url': 'https://www.flowcode.com', 'imageType': 'JPG', 'bgColor': 'transparent', 'fgColor': '#ffcc00', 'rimTextTop': 'Scan This Code', 'style': 'default', 'moduleShape': 'square', 'rimTextBottom': 'Get Your Code'}
Result: Failed
Analysis: Failed - possible issues: API returned error: Expecting value: line 1 column 1 (char 0)

Previously used parameters: - {'bgColor': '#abcdef', 'fgColor': '#123456', 'imageType': 'SVG', 'moduleShape': 'diamond', 'rimTextBottom': 'Thank You for Scanning', 'rimTextTop': 'Welcome to the Future', 'style': 'default', 'url': 'https://www.anotherexample.com'}
- {'bgColor': '#e0e0e0', 'fgColor': '#00ff00', 'imageType': 'PNG', 'moduleShape': 'square', 'rimTextBottom': 'Enjoy!', 'rimTextTop': 'Hello World', 'style': 'rim', 'url': 'https://www.example.com'}
- {'bgColor': '#ffffff', 'fgColor': '#000000', 'moduleShape': 'circle', 'rimTextBottom': 'Thank You', 'rimTextTop': 'Welcome', 'style': 'inset'}
- {'bgColor': 'transparent', 'fgColor': '#ffcc00', 'imageType': 'JPG', 'moduleShape': 'square', 'rimTextBottom': 'Get Your Code', 'rimTextTop': 'Scan This Code', 'style': 'default', 'url': 'https://www.flowcode.com'}

Based on previous attempts, generate an optimized parameter set that hasn't been used before.
Assistant: