If I write/edit a data entry using a cloud code script, which is being called by a lot of players simultaneously, will this data still be correct according to all called instances of this cloud script?

For example, if I have a number that is incremented by one everytime someone calls the event, and a lot of people call this script at the same time, will this number be incremented by exactly the amount of people that called the event, or will this result in errors?