How to parallel N electrical ports in PLECS Blockset?

In PLECS, I have N identical subcircuits whose outputs I want to connect in parallel, where N is a parameter defined before the simulation starts but may vary between runs. The subcircuits are instantiated as a port array of width N. How can I programmatically parallel-connect these N electrical ports, given that I cannot hardcode the number of branches? Wire Multiplexer doesn’t seem to work here since it requires a fixed, known width at design time.