st: problem regarding to 'geocode'

["Mor, Su Sun" <Su.Mor@va.gov>]

I am using Stata12.

I tried using "geocode" command and it's not working! I'm puzzled as it
worked before(a few months ago), but not anymore! 


geocode, address(f_address) city(f_city) state(f_state) zip(f_zip)

. list longitude latitude

     +---------------------+
     | longit~e   latitude |
     |---------------------|
  1. |        0          0 |
  2. |        0          0 |
  3. |        0          0 |
  4. |        0          0 |
  5. |        0          0 |
     |---------------------|
  6. |        0          0 |
  7. |        0          0 |
  8. |        0          0 |
  9. |        0          0 |
 10. |        0          0 |
     |---------------------|

Thanks in advance

Su Mor

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