up-modify-goal语句的问题

kaka52pk

(defconst wondernumber 101)
(defconst wondernumbertemp 102)
(defconst wondernumberdiff 103)

(defrule
        (true)
=>
        (set-goal wondernumber 0 )
        (set-goal wondernumbertemp 0 )
        (set-goal wondernumberdiff 0 )
        (disable-self)

(defrule
        (goal wondernumberlist 0)
=>
        (up-get-focus-fact building-count 276 wondernumber)
    (set-goal wondernumberlist 1)
       
)

(defrule
        (goal wondernumberlist 1)
=>
        (up-get-indirect-goal c: 101 wondernumberdiff)
    (set-goal wondernumberlist 2)
         
)
(defrule
     (goal wondernumberlist 2 )
=>
     (up-modify-goal wondernumberdiff g:- wondernumbertemp)
         (up-chat-data-to-all "有%d奇观" g: wondernumberdiff)
         (set-goal wondernumberlist 0)
这是我一段代码的一部分，设计初衷是计算总共建造了多少奇观，但是总是显示数量不对，我分步调试，才调试到这一步，总是一直显示的是“有2奇观”
按照逻辑明明是0-0，为什么会输出2，我人傻了。有大佬能解读下吗

kaka52pk

草，地址被占用了，所以导致不对