I am trying to open as many number of ports(OS::Neutron::Port) on the provider networks mentioned by the user(via the parameter file) and trying to attach them to the server(OS::Nova::Server) that is being created. How to achieve the above requirement?

heat_template_version: 2016-04-08

parameters:
    nwNames:
         type: comma_delimited_list
         description: The list of provider network names whose size is 'N'. N={X, Y,......N}

resources:
        portX:
           type: OS::Neutron::Port
           properties:
              network: { get_param: NetworkX }
              security_groups:
                  - { get_param: securityGroup }

        portY:
           type: OS::Neutron::Port
           properties:
              network: { get_param: NetworkY }
              security_groups:
                  - { get_param: securityGroup }

        portN:
       type: OS::Neutron::Port
           properties:
              network: { get_param: NetworkN }
              security_groups:
                  - { get_param: securityGroup }

    server1: 
        type: OS::Nova::Server
            depends_on: [ portX, portY,....PortN ]
            properties:
                image: { get_param: image }
                flavor: { get_param: flavor }
                name:  { get_param: [ vmNames, get_param: index ] }
                networks:
                    - port: { get_resource: portA }
                    - port: { get_resource: portB }

                    - port: { get_resource: portN }

outputs:

My attempt: I gave a try using the OS::Heat::ResourceGroup by creating all the required network ports within a single ResourceGroup, but I wasn't able to iterate through them in order to attach it to the server.

Thanks in Advance.