MIKE 1D 2D coupling by MIKE+

I am developing a 2D hydrodynamic model for coastal inundation. I used MIKE 21 FM flow model for that where I used spherical coordinate system (Lat-Long). I want to add upstream rivers and want to do 1D model and coupling with 2D model. Is it possible to do MIKE 1D by Mike+ having spherical coordinate system? 

Thank you for your post. Since this seems to be a support enquiry we suggest that you contact our support team at MIKE@dhigroup.com and we will be happy to follow up on this matter. Best Regards. DHI Admin

I already sent it. As right now I am using students lab kit so I am not supposed to get technical support. That is why I posted it here.