tested on checkmark 2019012000 creating a new checkmark mod, the default values for "number of examples" is 10, and for "maximum grade" is 100. however, as soon as "number of examples" is changed in the form, "maximum grade" is auto-calculated to be the same as "numer of examples". so if a teacher changes "number of examples" to 9, and then changes it back to 10, the maximum grade will be 10 instead of 100. this is very confusing and should be changed so that default maximum grade = 10.