Invalid problem structure error when using GlobalSearch

When I use lsqcurvefit(problem) & run(multistart,problem) - I get no errors with my problem structure but now that I am attempting GlobalSearch I get an error message:

Error using AbstractGlobalSolver/checkProblem (line 227)
Invalid problem structure: missing required field or invalid field value.

Error in GlobalSearch/run (line 305)
        obj.checkProblem(problem, probRequiredFields, probValidValues);

My code is as follows:

        xrise = xdata(1:300);
        yrise = ydata(1:300);

        options = optimoptions('lsqcurvefit');

        TolFun_Data = 1e-4;
        TolX_Data= 1e-4;
        FinDiffRelStep_Data=[0.01];
        MaxIter_Data = 1e5

        options = optimoptions(options,'Display', 'final');
        options = optimoptions(options,'MaxIter', MaxIter_Data);
        options = optimoptions(options,'TolFun', TolFun_Data);
        options = optimoptions(options,'TolX', TolX_Data);
        options = optimoptions(options,'FunValCheck', 'off');
        options = optimoptions(options,'Algorithm', 'trust-region-reflective');
        options = optimoptions(options,'Diagnostics', 'off');
        options = optimoptions(options,'FinDiffRelStep', FinDiffRelStep_Data);
        options = optimoptions(options,'FinDiffType', 'central');
        options = optimoptions(options,'Jacobian', 'off');
        options = optimoptions(options,'JacobPattern', 'sparse(ones(jrows,jcols))');
        options = optimoptions(options,'TypicalX', 'ones(numberofvariables,1)');

        x0 = [0.05];
        lb = [0.05];
        ub = [0.3];

        problem =createOptimProblem('lsqcurvefit','x0',x0,...
            'objective',@myfuncTi,'xdata',xrise,'ydata',...
            yrise,'lb',lb,'ub',ub,'options',options);

        gs=GlobalSearch;
        [TiVal fval exitflag output solutions]=run(gs,problem)

Answer 1

[Alan Weiss]

GlobalSearch does not accept lsqcurvefit as a local solver. If you want to use GlobalSearch, your only choice of local solver is fmincon.

I think that error message could be improved. I will look into it.

Alan Weiss

MATLAB mathematical toolbox documentation

[Alexandra]

Thank you for your response. I agree that can definitely be made clearer.