How to get code-snippet to only 'loop' once?

Unikron:
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But the problem here is that it continues to loop th.is code, and continue to loop the message "Users Stop"....

Don't over think this, it is really very simple.

The loop function is called repeatedly. So, within loop, only call your section of code if a flag say UserStopActivated is false (it should be initialised to false). Within your section of code set UserStopActivated to true. Your section of code will then only be called once, unless you set UserStopActivated to false again somewhere.