Create Bus Object:Inside the MATLAB Function block, define the bus object using the Simulink.Bus.createObject function. This should be done before you use it as an output.
function output = myFunction(input)
% Create bus object
busObject = Simulink.Bus.createObject(input);
% Define fields for the bus object
busObject.Elements(1).Name = 'A';
busObject.Elements(2).Name = 'B';
busObject.Elements(3).Name = 'C';
busObject.Elements(4).Name = 'vecD';
% Set vector size for variable-size signals
busObject.Elements(4).Dimensions = [-1 1];
% Create the bus signal
output = busObject;
Update MATLAB Function:
%Continue with your processing code and assign values to the fields of the bus object.
% Your processing code here
% Assign values to the bus object fields
output.A = ...; % Your result for A
output.B = ...; % Your result for B
output.C = ...; % Your result for C
output.vecD = ...; % Your result for vecDSet Bus Output:In the MATLAB Function block parameters, go to the "Output" tab.Set the "Output data type" to "Inherit: auto."Update Bus Usage in Model:Connect the bus object to your MATLAB Function block's output and other blocks in your model.
