ssm estimation not working inside for loop

Hi, I am trying to estimate an ssm model inside a loop. The model works fine ouside the loop, but fails to run inside the loop. The 'for loop' selects data correponding an identifier and then uses the estimate command to run SSM model defined outside the loop.

%Defining the SSM model
Mdl = ssm(@(params)DNSMAPPARSN(params,Yins,maturity));
options = optimoptions('fminunc','MaxFunEvals',25000,'algorithm','quasi-newton', ...
    'TolFun' ,1e-8,'TolX',1e-8,'MaxIter',1000,'Display','off');
% Defining the VAR model
AR = {diag(nan(3,1))};
varmdl = varm('AR',AR); 

for j = 1:29
            betains = beta(nid==j,2:end); % select input data for VAR
            residins = resid(nid==j,2:end);
            Yins = Y(nid==j,2:end); % select input data for SSM
            EstMdlVAR = estimate(varmdl, betains);
            % Initial conditions based on VAR results
            A0 = EstMdlVAR.AR{1};      
            A0 = diag(A0);              
            Q0 = EstMdlVAR.Covariance; 
            B0 = [sqrt(Q0(1,1)); 0; 0; sqrt(Q0(2,2)); 0; sqrt(Q0(3,3))];
            H0 = cov(residins);       
            D0 = sqrt(diag(H0));      
            d0 = mean(D0);
            mu0 = mean(betains)';
            param0 = [A0; B0; d0; mu0; lambda0];
            
            [EstMdlSSM,params] = estimate(Mdl,Yins,param0,'Display','off','options',options,...
                'Univariate',true);
             
            mu = params(end-3:end-1)';   % Get the estimated factor means
            intercept = EstMdlSSM.C * mu';
            deflatedYields = bsxfun(@minus,Yins,intercept');
            deflatedStates = filter(EstMdlSSM,deflatedYields);
            estimatedStates = bsxfun(@plus,deflatedStates,mu);
            betassm(nid==j,:) = estimatedStates;
            Yf(nid==j,:) = estimatedStates*EstMdlSSM.C';
 end

I get "Undefined function or variable 'Yins'" as the error message, when I run the loop. Following message is also displayed:

Error in (line 67): [EstMdlSSM,params] = estimate(Mdl,Yins,param0,'Display','off','options',options,'Univariate',true);

Caused by: Failure in user-supplied function evaluation.

The VAR seems to work fine inside the loop. Can anyone please explain where I am going wrong here.

Thanks, Vineet