Last Update line doesnt change

[AToN]

I had updated a map three times, by uploading a new version, but the date/time of "last update" doesnt change. The time is still the same as I uploaded the map the first time. So other Members couldnt see, if I had changed sth.
Maybe I do sth wrong, could u pls help me?

 

[AToN]

Could be closed. It works, but still dont know why. ^^

 

[Ralle]

I cannot remember exactly how I wrote the upload script. I think you have to wait x amount of days before it is judged as a valid update which will make the timestamp change.