help me pls!! how to use reactOnNPC to anti botkiller

[faifei]

i had read this
https://openkore.svn.sourceforge.net/sv ... README.txt
but i dont know how to write in my config

reactOnNPC talk num @eval(???){
type number
msg_0 為降低外掛對伺服器的侵擾，請您正確輸入下面驗證的答案，謝謝。
msg_1 ╔════╦═════╗
msg_2 ????????????????
msg_3 ╚════╩═════╝
}

what i should write in ????
this is my console look like
=========================================================================
Unknown #110008307: 【防外掛系統】
Unknown #110008307: 為降低外掛對伺服器的侵擾，請您正確輸入下面驗證的答案，謝謝。
Unknown #110008307: ╔════╦═════╗
Unknown #110008307: ║驗證碼：║ 6 x 9 - 8║
Unknown #110008307: ╚════╩═════╝
Unknown #110008307: 自動繼續交談
存在NPC: Unknown #110008307 (89, 69) (ID 110008307) - (2)
Unknown #110008307: 請輸入 'talk num <數字 #>' 以輸入一個數字.

[Raider]

reactOnNPC talk num @eval(#1~1 * #3~1 * #5~1)) {
type number
msg_0 ANSWER THIS CORRECTLY OR BANNED!
msg_1 /^(\d+)$/
msg_2 * (TIMES
msg_3 /^(\d+)$/
msg_4 - (MINUS)
msg_5 /^(\d+)$/
msg_6 = ?
}