Add header to every request in Postman in pre-request script

Question

I want to automatically add a header to every request in my whole collection using this pre-request script:

pm.request.headers.add({
    \'key\': \"myvar\",
             


        

Answer 1

I think may be you can try this way :

  // Add or update an existing header

 pm.request.headers.upsert({
 'key': "myvar",
 'value': pm.environment.get("myvar") 
 });

This was updated in Postman App (v7.0.9). For more reference you can refer to : https://github.com/postmanlabs/postman-app-support/issues/1947