This sentence requires that the corresponding parameters be converted into integer types, that is, the "plastic" string descriptions such as "123" and "13" cannot be non-plastic strings, and the "for”= = = in your screenshot cannot be converted into plastic strings. So something went wrong.

I have never used your blue color, but from the error report, I can see that he expected a "}", which means he didn't get a "}". It can be inferred that in your {" 1" "2" "3"}, there is a space missing after the last "3", and he connects "3"} as a character. Also, I have never used blue, I don't know. Whether braces {} are needed before and after input, or even whether ""quotation marks are needed for each character. We can start from these aspects and check them one by one. But one thing, "3" is a character.