Get headers on POST Call M Code

Hi,

Was looking for a way to get a particular header from a POST call response via M Code. Basically, I'm doing a post call to get a logon token from a tool we use. Though the logon token is on the body of the reponse, its formatted in such a way that the & becomes &amp and I don't want to uneccessarily do text replacement if there is an easier way to get it (the header displays it perfectly.)