If I understand correctly, you have 204 variables named mon1 mon2 mon3
... mon204. I would type:
local k=1
while `k'<=204 {
    keep if mon`k'=="3"
    local ++k
}
[email protected] escribi�:
>I'm having one problem with a command in STATA 8.0. I have variables in which
>I want to keep only one case in all of them, but there's too many (204)to do
>one by one.
>
>i.e.
>keep if mon*=="3"
>keep if mon[i]=="3"
>
>But I get an "mon ambiguous abbreviation" error. Please help!!!
>
>Thanks
>Dexter E. Jason
>*
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>
>
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*
*   For searches and help try:
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*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/