[nv-l] nvdbimport - setting StringType fields to null

[Jane Curry <jane.curry@skills-1st.co.uk>]

I have my own object attribute defined as StringType.  I can set it 
quite happily to a value, but how do I set it back to the empty 
string???  If I have "" as the data field in my blah.import file, the 
value in the object database is """".  If I leave it off entirely then 
nvdbimport complains there are insufficient values supplied.  Single 
quotes dont work either - I end up with a value of "''" (ie double quote 
single quote single quote double quote).  NULL as a value in blah.import 
gives an object attribute of "NULL".
Any good ideas?
Thanks,
Jane

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