I am developing a “basic” extension (addon) in firefox to modify the request headers I followed the official documentation here (copy/paste but didn’t work) https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/onBeforeSendHeaders#details_2 changed it to the example below and still can’t make it work.

I am developing a “basic” extension (addon) in firefox to modify the request headers I followed the official documentation here (copy/paste but didn’t work) https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/onBeforeSendHeaders#details_2 changed it to the example below and still can’t make it work.

I am developing a “basic” extension (addon) in firefox to modify the request headers I followed the official documentation here (copy/paste but didn’t work) https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/onBeforeSendHeaders#details_2 changed it to the example below and still can’t make it work.

I am developing a “basic” extension (addon) in firefox to modify the request headers I followed the official documentation here (copy/paste but didn’t work) https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/onBeforeSendHeaders#details_2 changed it to the example below and still can’t make it work.

I am developing a “basic” extension (addon) in firefox to modify the request headers I followed the official documentation here (copy/paste but didn’t work) https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/onBeforeSendHeaders#details_2 changed it to the example below and still can’t make it work.

My company uses a 3rd party service that is built with React.
There are some text field parts of the app that my company requires to be formatted a certain way. For various reasons we are not in a position to ask the vendor to update their software (we are one user of many).

I have written this manifest.json