WARNING [3004] Cannot evaluate condition (User.Custom1 != '5') for setting 'number' ('not_a_number' is not a valid decimal number). Please check the User.Custom1 attribute and make sure that its value corresponds to the comparison operator.
INFO [5000] Evaluating 'number' for User '{"Identifier":"12345","Custom1":"not_a_number"}'
  Evaluating targeting rules and applying the first match if any:
  - IF User.Custom1 != '5' THEN '<>5' => cannot evaluate, the User.Custom1 attribute is invalid ('not_a_number' is not a valid decimal number)
    The current targeting rule is ignored and the evaluation continues with the next rule.
  Returning 'Default'.