My jupyter linewrap doens't work

[O_O]

I tried (on my .jupyter\nbconfig\notebook.js)

{
 “Cell”: {
   “cm_config”: {
    “lineWrapping”: true
   }
  }
}

and also tried

{
  “MarkdownCell”: {
   “cm_config”: {
    “lineWrapping”: true
   }
 },
  “CodeCell”: {
   “cm_config”: {
    “lineWrapping”: true
   }
  }
}

but Neither of them works.

It doesn’t seem to work after version 7.

My notebook version is 7.0.8…

Please help me