st: bysort problem

["Nikolaos A. Patsopoulos" <npatsop@cc.uoi.gr>]

I'm currently writing  a program that in some point checks if more than 
observations have two vars (E and SE) equal. If more than one exists 
then SE is increased by 0.001:

   tempvar _id
   qui gen `_id'=0
   local _idN=2
   while `_idN'!=1 {
         
           bysort `E' `SE': replace `_id'=_n if `touse'
           count if `_id'>1 & `touse'
           replace `SE'=`SE'+(`_id'-1)*0.001 if `_id'>1
           sum `_id' if `touse', detail
     
           local _idN=r(max)
           list `E' `SE' `_id' if `touse'
   
   }

when I run the above piece of code bysort fails in the second pass:

   2
(2 real changes made)

                         __000002
-------------------------------------------------------------
     Percentiles      Smallest
1%            1              1
5%            1              1
10%            1              1       Obs                   7
25%            1              1       Sum of Wgt.           7

50%            1                      Mean           1.285714
                       Largest       Std. Dev.        .48795
75%            2              1
90%            2              1       Variance       .2380952
95%            2              2       Skewness       .9486833
99%            2              2       Kurtosis            1.9

    +------------------------+
    | var1   var2   __000002 |
    |------------------------|
 1. | .145   .014          1 |
 2. | .145   .015          2 |
 3. | .145   .015          1 |
 4. | .167   .015          1 |
 5. | 1.89   .015          1 |
    |------------------------|
 6. | 1.89   .016          2 |
 7. | 1.89   .016          1 |
    +------------------------+
   0
(0 real changes made)

                         __000002
-------------------------------------------------------------
     Percentiles      Smallest
1%            1              1
5%            1              1
10%            1              1       Obs                   7
25%            1              1       Sum of Wgt.           7

50%            1                      Mean                  1
                       Largest       Std. Dev.             0
75%            1              1
90%            1              1       Variance              0
95%            1              1       Skewness              .
99%            1              1       Kurtosis              .

    +------------------------+
    | var1   var2   __000002 |
    |------------------------|
 1. | .145   .014          1 |
 2. | .145   .015          1 |
 3. | .145   .015          1 |
 4. | .167   .015          1 |
 5. | 1.89   .015          1 |
    |------------------------|
 6. | 1.89   .016          1 |
 7. | 1.89   .016          1 |
    +------------------------+

The obs in 3 and 6 should have _id (__000002) 0.016 and ) 0.017, 
respectively.

What do I miss?

Another sort question:

How can I label tempvars and locals?

Thanks in advance,

Nikos

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