I am trying to complete a tobit regression with censored data. This is because i am looking at expenditure shares for wine as the dependent variable however some households report zero consumption of wine therefore i want to censor the data at zero for the dependent variable (expshare_wine_on) my independent variables include: the log price of wine, log income, the gender (sexhrp), the year (2007-2009), the socio-group (4 groups) and the government region (4 groups). I have created dummy variables for the gender, year, socio group and government region (shown as the _I variables)

I have never used the tobit regression before and i have tried inputting the following command into stata however it says "nothing found where name expected", where am i going wrong?

tobit expshare_wine_on [l_p_wine_on log income _Isexhrp_2 _Iyear_2008 _Iyear_2009 _Isocio_gro_2 _Isocio_gro_3 _Igor_2 _Igor_3] , ll(0)

Here is a stataex of my data:


Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input float(expshare_wine_on logincome l_p_wine_on) byte(_Isexhrp_2 _Iyear_2008 _Iyear_2009 _Isocio_gro_2 _Isocio_gro_3 _Igor_2 _Igor_3)
          0  6.422159 . 0 0 0 0 0 0 1
          0   6.40044 . 0 0 0 0 0 0 1
 .005604915  7.459103 . 1 0 0 0 0 1 0
          0  6.775366 . 0 0 0 0 0 0 1
          0  7.113805 . 1 0 0 0 0 0 1
          0  6.569739 . 0 0 0 0 0 1 0
          0  5.533982 . 0 0 0 0 0 0 0
          0  7.579028 . 0 0 0 0 0 0 0
          0  6.593606 . 1 0 0 0 1 0 1
          0  5.272487 . 0 0 0 0 0 1 0
          0  6.609026 . 0 0 0 0 0 0 1
          0  5.938198 . 1 0 0 0 1 1 0
          0  7.337308 . 0 0 0 1 0 0 1
          0  7.146323 . 0 0 0 1 0 0 0
 .006608747  5.750647 . 0 0 0 0 0 0 0
          0  7.203275 . 0 0 0 0 0 0 0
          0  6.494836 . 1 0 0 0 1 0 0
 .013427625  6.484792 . 0 0 0 0 0 1 0
          0  6.522772 . 1 0 0 0 0 0 0
          0  6.285625 . 0 0 0 0 0 0 0
          0  5.278839 . 1 0 0 0 0 1 0
          0  5.735572 . 0 0 0 0 0 0 0
          0  6.332039 . 0 0 0 0 0 0 1
          0  6.243429 . 1 0 0 0 0 0 1
  .04080451  7.020963 . 0 0 0 0 0 0 1
          0  6.001791 . 0 0 0 0 0 0 0
          0  4.970105 . 1 0 0 0 0 1 0
  .05318476   6.24026 . 1 0 0 0 0 0 1
 .004725324  6.525675 . 1 0 0 0 0 0 0
          0  5.715316 . 1 0 0 0 0 0 1
          0  6.292069 . 0 0 0 0 0 1 0
.0021395173  7.579028 . 0 0 0 1 0 0 1
          0  5.805894 . 0 0 0 0 0 0 0
          0  6.336164 . 1 0 0 0 0 0 0
 .005811018   6.59858 . 0 0 0 0 0 1 0
  .01420468  7.579028 . 0 0 0 1 0 0 1
          0  5.272558 . 0 0 0 0 0 1 0
          0  5.287823 . 1 0 0 0 0 0 0
          0  6.228738 . 0 0 0 0 0 0 0
          0  6.229595 . 0 0 0 0 1 0 1
          0  6.007731 . 1 0 0 0 0 0 0
          0  5.877369 . 0 0 0 0 0 0 0
.0041208593   6.54662 . 1 0 0 1 0 0 1
   .0124029  5.966916 . 1 0 0 0 0 0 1
          0  6.911763 . 0 0 0 0 1 0 1
          0  6.145001 . 0 0 0 0 1 0 1
          0  7.579028 . 0 0 0 0 0 0 1
 .006529902  6.862258 . 0 0 0 0 0 0 0
          0  5.800377 . 1 0 0 0 0 0 1
          0  6.824134 . 0 0 0 0 0 0 0
          0  6.789703 . 1 0 0 0 0 0 0
          0  6.928361 . 1 0 0 1 0 0 1
          0  6.399566 . 0 0 0 0 0 0 0
          0  6.500343 . 0 0 0 0 1 1 0
          0 4.4601445 . 1 0 0 0 0 1 0
          0  6.617764 . 0 0 0 0 1 0 1
          0  5.679811 . 0 0 0 0 0 1 0
          0  6.867948 . 0 0 0 0 0 0 0
  .05028144  6.313678 . 1 0 0 0 1 0 0
          0  6.596409 . 1 0 0 0 0 0 0
 .017830186  6.492455 . 0 0 0 0 0 0 0
          0  6.114235 . 0 0 0 0 1 0 0
          0  6.092607 . 0 0 0 0 0 1 0
          0  6.205401 . 0 0 0 0 1 0 0
          0  6.580847 . 0 0 0 0 1 1 0
          0  4.314417 . 0 0 0 0 0 0 0
 .016797012  6.386812 . 0 0 0 0 0 0 0
          0  5.972129 . 0 0 0 0 1 0 1
          0  6.175955 . 1 0 0 0 0 0 1
          0  5.530817 . 1 0 0 0 0 0 1
          0   6.25011 . 1 0 0 0 0 0 0
          0  5.958502 . 0 0 0 0 0 0 1
  .02511486  7.579028 . 0 0 0 0 0 0 0
          0  6.898997 . 1 0 0 0 0 1 0
          0  5.885359 . 1 0 0 0 0 1 0
          0  6.709394 . 0 0 0 0 0 0 0
          0  5.036965 . 1 0 0 0 0 0 1
          0  6.327079 . 1 0 0 0 0 0 0
          0  4.998036 . 0 0 0 0 0 0 1
          0  6.697083 . 0 0 0 0 1 0 0
          0  5.011914 . 1 0 0 0 0 0 1
          0  6.158079 . 1 0 0 0 0 0 1
          0  7.176102 . 0 0 0 0 0 0 0
          0  5.896472 . 1 0 0 0 0 0 1
          0  6.951744 . 0 0 0 1 0 0 1
          0  5.197281 . 0 0 0 0 1 1 0
          0  7.545757 . 0 0 0 1 0 0 1
          0  5.673536 . 1 0 0 0 0 0 0
  .01174157  6.977282 . 1 0 0 0 0 0 0
          0  6.517243 . 0 0 0 0 0 0 0
 .007315162  6.570533 . 0 0 0 0 0 1 0
          0  6.649363 . 1 0 0 0 0 1 0
          0  6.787118 . 1 0 0 0 0 1 0
          0  7.313854 . 0 0 0 0 0 0 0
          0  6.104423 . 1 0 0 0 0 0 1
          0   5.72316 . 1 0 0 0 0 0 0
          0  5.897319 . 1 0 0 0 1 0 1
          0  5.243925 . 1 0 0 0 0 0 1
.0021459134  7.579028 . 0 0 0 1 0 0 0
          0  6.524854 . 0 0 0 0 0 1 0
end
Thank you for any help in advance