GAMULTIOBJ function does not take into account the upper bound (ub)

Hi everyone,

I am designing an Genetic Algorythm for which the genes of the population must be between the values 0 and 150. For thius purpose, I have established the lower bound (lb) and the upper bound (ub) to 0 and 150 respectively as it can be seen in the code below.

    for i=1:numberOfVariables
        lb(i)= 0;                  % lower bound of the genes
        ub(i)= 150;                % upper bound of the genes
    end
            
    % Inequality restrictions definition

    A = []; b = [];                 % without inequality restrictions
    Aeq = []; beq = [];

    % GAMULTIOBJ solver execution

    options = gaoptimset('PlotFcns',[]);
    options = gaoptimset(options,'PopulationSize',numPop);   
    options = gaoptimset(options,'PopInitRange',[(-1);(1)]);
    options = gaoptimset(options,'CrossoverFcn',@crossoverheuristic);   
    options = gaoptimset(options,'MutationFcn',@mutationadaptfeasible);
    options = gaoptimset(options,'TimeLimit',tm);
    options = gaoptimset(options,'Generations',numGenerations);
   
    [x,Fval,exitFlag,Output] = gamultiobj (FitnessFunction,...
                              numberOfVariables,A,b,Aeq,beq,lb,ub,options);
     

Every time I execute the code, I have observed that the genes of the population values are between 0 and around 1.2 (it rarely exceeds 1 in any value) as it can be seen in the image below.

If I have delimited the boundaries between 0 and 150 I do not understand why the obtained values are only between 0 and 1.2.

This is not supposed to happen, is it? What am I doing wrong? Why does this happen? How can I solve this?

Thanks a lot.