1. Technically, though not in real time, an IP address is dynamic. You could possibly get the same user from two different IPs. I suggest using steamID. Also...IPs will only be 16 chars "xxx.xxx.xxx.xxx"
2. how do you set PlayerXP[][] i.e. how do you put the data into it during execution?
I'm aware that most XP mods can get huge so try to do what you can for me.
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What an elegant solution to a problem that doesn't need solving....