Mind2Web datasets have 100 tasks for evaluation, different from the number reported in the paper?

[Shuwen27]

Regarding m2w-dev/std, it seems that both dev and std return 100 tasks for evaluation, but according to the paper, dev should be 31 tasks and std should be 177 tasks. Why they are not the same? When I checked the code, I guess it is because the config does not involve range_min and range_max, than the get_indices function always pick up [0,100]?
class Mind2Web(Task):
def init(self, **config):
self.count = config.pop("count", 100000)
self.range_min = config.pop("range_min", 0)
self.range_max = config.pop("range_max", 100)