Separately saving time-series simulation output at each iteration

The following script calls 'Gripper3Test' Simulink model 125 times (3 'for' loops). At each time, I want to save 'trackerData1' in to the workspace output seperately. It would be great, if someone can help me in this regard. I have attached the format of the 'trackerData' varible and 'Gripper3Test' simulink model.

P1=0:1:4;
P2=0:1:4;
P3=0:1:4;

for i=1:(length(P1))
    for j=1:(length(P2))
        for k=1:(length(P3))
            P1_in=P1(i);
            P2_in=P2(j);
            P3_in=P3(k);
            a=sim('Gripper3Test');
            b=a.get('trackerData'); %trackerDataStore is a time series data
           save('Simout',b); % This doen't work. 
        end
    end
end

Answer 1

[Dimuthu Dharshana Arachchige]

This is how we can do it. Very easy. We can use num2str()

P1=0:1:4;
P2=0:1:4;
P3=0:1:4;

for i=1:(length(P1))
    for j=1:(length(P2))
        for k=1:(length(P3))
            P1_in=P1(i);
            P2_in=P2(j);
            P3_in=P3(k);
            sim('Gripper3Test');% This is calling the simulink model
            save(['trackerDataFromWorkspace_' num2str(i) num2str(j) num2str(k)],'trackerData');
            % Here trackerData is the parameter to workspace
    end
end