Struggling to retrieve and save PayPal token via Bubble Workflow

I have a POST request in the API Connector that I’m using to get an access_token (trying to retrieve PayPal token and save it in a Bubble data base), can I make a POST request in a Bubble Workflow and save the received data? I know there is a checkbox “Attempt to make a call from the browser”, but it disappears if you add a title (In my case, Authorization). Any advice on how to solve this please ?

Thanks in advance