about trmm geolocation

Hi,
I use the script from http://www.ncl.ucar.edu/Applications/Scripts/hdf4sds_6.ncl to process trmm 2A12 V7 data, but it had this error:
      fatal:Either file (f) isn't defined or variable (geolocation) is not a variable in the file
It seems this script is only fit for version 6 data, how can I modify it to process version 7 data?

Thanks in advance.
JinQ

--
JinQing  LIU                 M.S.
Ocean  University  of  China
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Received on Sat Mar 24 20:24:41 2012