It is not helpful to post code as screenshots. Just requires more work for the audience to read it (especially if it’s in dark mode). Please post code as such, namely included in three backticks
```
code goes here
```
As to your script: Please read the corresponding part of the manual thoroughly and check out sample code here in the forum (searching for ‘on performsmartrule’ should turn up enough hits).
Simply wrapping the script in a handler doesn’t cut it, as the script itself works with the selected records, while a smart rule script receives the records as a parameter of the handler. You wrote that part, but then you didn’t adjust the rest of the code, so it’s working with a selection which is non-existing. Consequently, you convert 0 records of an empty selection to nothing.