The fourth through infinitive parameters for register_event are conditions. "Team_Select" isn't a condition. Here are some examples of how to use it, from amxmodx.inc:
* Examples for conditions:
* "2=c4" - 2nd parameter of message must be sting "c4".
* "3>10" - 3rd parameter must be greater then 10.
* "3!4" - 3rd must be different from 4.
* "2&Buy" - 2nd parameter of message must contain "Buy" substring.
* "2!Buy" - 2nd parameter of message can't contain "Buy" substring. */
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