Generate report through Angular for Web API C#

Question

I’m starting the report part of my system, when making a request to generate a report in a new tab I can even link through some parameters.

window.open(this.httpUtil.url('SinistroReports/' + search.DateStart +'/' + search.DateEnd +'/'), "_blank")

But I needed for a whole object serialized by POST, which as far as I know, I can’t get through the window..

So I’m passing my report attributes to my API / POST and I’m passing my report, only I needed my API to open a new tab to view the report.

Does anyone have any tips / hint on how to proceed?