How can I use parsim command for my simulink model to perform parallel simulation for the given code?

I am facing while using the parsim command for running my simulations on simulink. IN the code below, I am using a nested for loop. I have called all 3 simulation objects as 'in' with different indexing i1, i2 and i3 for the parameters below.

My code on compiling (without using parallel computing) creates a structure called 's' which stores signals in base workspace. However, when using the parsim command, variable 's' is not found.

Reference Document: Parallel Simulations Using Parsim: Parameter Sweep in Normal Mode - MATLAB & Simulink - MathWorks Benelux

Part of code :

modelname = 'SEC_final' ;

% parameters to be used in simulink

dist_5thwheel_to_second_axle_sem2_itr = [7.13, 7.63];

dist_front_trailer_to_5thwheel_sem2_itr = [1.368, 1.668];

dist_pin_coupling_to_dolly_centre_itr = [3.3, 3.8, 4.3]; %drawbar length

%size of above parameters

counter1 = length(dist_5thwheel_to_second_axle_sem2_itr);

counter2 = length(dist_front_trailer_to_5thwheel_sem2_itr);

counter3 = length(dist_pin_coupling_to_dolly_centre_itr);

for i1 = 1:1:counter1 %counter for parameter1

in(i1) = Simulink.SimulationInput(modelname); %simulation object 1 for model

in(i1) = setBlockParameter(in(i1), [modelname '/Semitrailer 2'], 'dist_5thwheel_to_second_axle_sem2', num2str(dist_5thwheel_to_second_axle_sem2_itr(i1)));

for i2 = 1:1:counter2 %counter for parameter2

in(i2) = Simulink.SimulationInput(modelname); %simulation object 2 for model

in(i2) = setBlockParameter(in(i2), [modelname '/Semitrailer 2'], 'dist_front_trailer_to_5thwheel_sem2', num2str(dist_front_trailer_to_5thwheel_sem2_itr(i2)));

for i3 = 1:1:counter3

in(i3) = Simulink.SimulationInput(modelname); %simulation object 3 for model

in(i3) = setBlockParameter(in(i3), [modelname '/Semitrailer 2'], 'dist_front_trailer_to_5thwheel_sem2', num2str(dist_front_trailer_to_5thwheel_sem2_itr(i3)));

% assigning the reference parameters in base workspace

assignin('base','tmax',tmax);

assignin('base','dt',dt);

assignin('base','Vx',Vx);

assignin('base','X0',X0);

assignin('base','rdfname',rdfname);

assignin('base','rdfname_inner',rdfname_inner);

assignin('base','steer_input',steer_input);

assignin('base','brake_input',brake_input);

assignin('base','throttle_input',throttle_input);

assignin('base','Vx_input',Vx_input);

assignin('base','end_posy',end_posy)

assignin('base','steer_sens_c',steer_sens_c);

assignin('base','steer_ratio',steer_ratio);

assignin('base','steer_control',steer_control);

assignin('base','path_input',path_input);

assignin('base','lookahead_time',lookahead_time);

assignin('base','T_lag',T_lag);

modelname = 'SEC_final';

% sim(modelname,[],simset('DstWorkspace','base')); % command for normal simulation (not using parallel computing)

out_1 = parsim(in, 'ShowProgress', 'on'); %parsim command

evalin('base',['save ..\simresults\',modelname,' s VR dt']) %s is a structure containing many signals from simulation

end

end

end

%% ------------- My command window display on running the above code ----------------%%

[14-Aug-2021 23:35:40] Loading model on parallel workers...

[14-Aug-2021 23:36:18] Running simulations...

[14-Aug-2021 23:36:46] Completed 1 of 1 simulation runs. Run 1 has errors.

Warning: Simulation(s) with indices listed below completed with errors. Please inspect the corresponding SimulationOutput to get

more details about the error:

[1]

[14-Aug-2021 23:36:46] Cleaning up parallel workers...

Error using save

Variable 's' not found.

Error in Example_Training_90_deg_exit (line 252)

evalin('base',['save ..\simresults\',modelname,' s VR dt'])

[Reid Spence]

Parsim does not return outputs of things like ToWorkspace Blocks to the base workspace but instead returns them inside the Simulink.SimulationOutput object which for you is "out_1". You will need to index the output object to find the variable "s".

It looks like out_1 also contains an error message for the simulation. Consider using ">>out_1.ErrorMessage" or use the "SimulationManager" option on parsim to see the error message and address it. My guess is that you will have to use the 'TransferBaseWorkspace' option for parsim since it looks like your model parameters preside in the base workspace.