My request won't repeat itself after executing

Question

So I have a request in Postman that will create a User for me. I want to run it automatically for a certain amount of time to save time preparing datas. I try using setNextRequest but it doesn't work. I have tried to put it in Pre-request Script, Tests tab of the request itself as well as the Collection but it just won't run. I have certainly sure that all of my item is saved, none of them has orange dots.

var count = 0;
while(count < 5){
    postman.setNextRequest("CreatePersonWithUser");
    console.log("This is the " + count + " time");
    count++;
}