Stata绘制附加漏斗图

local n= _N

metan logor selogor,notable nograph

local ES= r(ES)

summarize selogor, meanonly

local semax = r(max)

metatrim logor selogor, funnel save(metatrimdata, replace)

use metatrimdata, clear

local nfilled = _N - `n'   

metan filled fillse, notable nograph

local filledES=r(ES)

confunnel filled fillse if _n > `nfilled', contours(5 10) contcolor(gs10) extraplot(scatter fillse filled if _n < = `nfilled', m(T) mc(gs8) || function `ES', horizontal lc(black) range(0 `semax') || function `filledES', horizontal lc(gs8) range(0 `semax'))

代码如上，执行至local nfilled = _N - `n'    时，总提示无效代码，前面的步骤都可以执行，有大神能帮帮忙吗？

上次做是可以的，不知道这次怎么不行了

编程就是问题多多呀