st: ahout post

[rghuang <0034058@fudan.edu.cn>]

i use the following program in stata8,but when it finish,the variable se and bias all are missing.     
 
capture program drop Accum
        program define Accum
                postfile results se bias n using sim, replace
                forvalues n=20(20)2000 {
                        qui bs "regress mpg weight for" "_b[for]", reps(`n') 
                        post results (r(se)) (r(bias)) (`n')
                }
                postclose results
        end
        Accum
        use sim, clear


then i add version 7 to it ,then it work fine.see following:
capture program drop Accum
        program define Accum
                version 7
                postfile results se bias n using sim, replace
                forvalues n=20(20)2000 {
                        qui bs "regress mpg weight for" "_b[for]", reps(`n') 
                        post results (r(se)) (r(bias)) (`n')
                }
                postclose results
        end
        Accum
        use sim, clear

so my question is :if i do not add verion 7,then what should i modify the program.
thank you!

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