[mwatt]

Seems to me that if initial $random_result value were always garuanteed to be between 1 and 100 inclusive, and if that value really was random with that 1 to 100 range over time, then yeah, you'd get a pop 10% of the time.

However, the code simply checks for greater to or equal to 90 and less than or equal to 100. Are you certain that the pre-check value of $random_result always falls between 1 and 100 inclusive? Because if not, you aren't getting 10% out of this. Also if the distribution is not really random, you aren't getting 10% out of this.

Empirical evidence strongly suggests that the results are not what is expected. Unless several people, mutliple times, are getting really unlucky rolls from the rng, there is something wrong here.

I appreciate your willingness to listen and respond. I also must allow the possibility than I am wrong (it has been known to happen). But I think there is more than meets the eye going on here.