st: replacing incorrect dob values

[Kim Price <kprice@hsph.harvard.edu>]

I need to replace some date of birth values that were entered 
incorrectly.  The variable dob (V1) is entered as %d.  I've been using 
variations on the following and coming up with error messages:

replace V1=05sep2046 05sep1946 if id==434

I want to change id 434's date from 05sep2046 to 05sep1946.

Any help will be greatly appreciated.

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