Help with error Invalid argument at position 2. Function requires exactly 1 positional input(s).

I need some help debugging an error I am seeing in my command window when trying to invoke a static method.

This is the code I have began writing to remotely control a visa instrument.

classdef TandE
   
    methods(Static)

        function insertionloss(machine, ip, calfile)
            switch machine
                case 1
                    vna = visadev('ni', ip);
                    fopen(vna);

                    %Setup Calibration / Port Mapping
                    write(vna, "SYST:PRESET");
                    write(vna, "MMEM:LOAD:CSAR" + ' ' + calfile);
                    write(vna, "*WAI");
                    write(vna, "SENS:SWE:MODE CONT");

                    fclose(vna);
                case 2

                otherwise
                    warning('Unexpected Machine')

            end         
        end
    end
end

When I try to call the function I am hit with this error. I am not quite sure what I am doing incorrectly but some help would be appreciated.

>> a = TandE

a = 

  TandE with no properties.

>> a.insertionloss(1, ip, calfile)
Error using TandE.insertionloss
Invalid argument at position 2. Function requires exactly 1 positional input(s).
 
>> 

Answer 1

[Tanner Fortier]

Issue was fixed, found it it was due to the visadev call and not the function call. Was using visa to call before and did not realize that the newer visadev did not have the same requirements for a call.