Hellow
I have a question in rangestat
why do I always get the result that never calculates?
My mean is the result that is always the same with original

I want to compute MA5
rangestat (mean) v_debt v_roe v_Cdebt, interval(time -5 0) by(id time)

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input float(time id v_debt v_roe v_Cdebt) double(v_debt_mean v_roe_mean v_Cdebt_mean)
19328 1          .           .           .                    .                   .                   .
19693 1  .18179545           .    .9389104   .18179544806480408                   .   .9389104247093201
20058 1   .6492594   -.7089842    2.163649    .6492593884468079  -.7089841961860657   2.163649082183838
20423 1  .04369804   -.7517949  .008138238  .043698038905858994  -.7517948746681213 .008138238452374935
20606 1   .2233313   1.0564739    .3494784    .2233312875032425  1.0564738512039185  .34947842359542847
20789 1 .028437067   2.5170796   .04255668  .028437066823244095  2.5170795917510986 .042556677013635635
20971 1   .2298042  -.21633975     .353778   .22980420291423798 -.21633975207805634  .35377803444862366
21154 1 -.04178981     .818469  -.28660178 -.041789811104536057   .8184689879417419  -.2866017818450928
21336 1   .3777859  -.24989977    .7478976   .37778589129447937 -.24989977478981018   .7478975653648377
21428 1   .4533736    .3821486    .4520029   .45337361097335815   .3821485936641693   .4520029127597809
21519 1   -.326355 -.024748646   -.4122111   -.3263550102710724 -.02474864572286606  -.4122111201286316
21609 1   .7289726   -.7508591     .622786    .7289725542068481  -.7508590817451477   .6227859854698181
21701 1   .9563724   1.2806365    .8218676    .9563724398612976  1.2806365489959717   .8218675851821899
21793 1   .2532618   .04117237    .4774139    .2532618045806885 .041172366589307785  .47741392254829407
21884 1  -.4537844    .2989276  -.53304607  -.45378437638282776   .2989276051521301  -.5330460667610169
21975 1 -.02242019   -.8486412 -.063347004 -.022420192137360573  -.8486412167549133 -.06334700435400009
22067 1 -.07704715    .7840909  -.22435866  -.07704714685678482   .7840909361839294  -.2243586629629135
22159 1  .07434082   .20955414   .29531816       .0743408203125  .20955413579940796   .2953181564807892
22250 1 -.23197924    -.325961  -.26288265  -.23197923600673676 -.32596102356910706 -.26288264989852905
22340 1 -.03853066   -.8265625  -.02780134 -.038530658930540085  -.8265625238418579 -.02780134230852127
end
format %dCY/N/D time