Using window.open in pre-request Script

Hi,
I’m using postman to test the api calls to bamboo apis. I’m trying to run the bamboo build and test the bamboo variables.
Well its working fine, but I had to go to bamboo and open the current build to check if its kicked of or not.
I tried to open the build URL in chrome browser using “window.open()” in the Pre-request Script, but it throws error “window is not defined”.
I need help with as I tried to google it and I could find any supportive article.
Thanks
Sandeep