I passed everything except last one , why?

     function sumFibs(num) {
      var m=0;
      var n=1;
      var fibb;
      var sum = [0,1];
      var totalsum=0;
      for(var i=1;i<=num;i++){
        fibb = m+n;
        m = n;
        n = fibb;
        sum.push(fibb);
      }
      for (var j = 0;j < sum.length; j++){
        if(sum[j] < num && sum[j]%2 != 0){
          totalsum = totalsum + sum[j];
        }  
      }
      return totalsum;

    }

    sumFibs(75025);