def setFieldValue( fieldName, fieldValue, dbid = nil, rid = nil, key =nil )
      @dbid ||= dbid
      @rid ||= rid
      @key ||= key
      if @dbid and (@rid or @key)
         clearFieldValuePairList
         addFieldValuePair( fieldName, nil, nil, fieldValue )
         editRecord( @dbid, @rid, @fvlist, nil, nil, nil, nil, nil, @key )
      end
   end
def setFieldValue( fieldName, fieldValue, dbid = nil, rid = nil, key =nil )
      @dbid ||= dbid
      @rid ||= rid
      @key ||= key
      if @dbid and (@rid or @key)
         clearFieldValuePairList
         addFieldValuePair( fieldName, nil, nil, fieldValue )
         editRecord( @dbid, @rid, @fvlist, nil, nil, nil, nil, nil, @key )
      end
   end
Change a named field's value in the active record.
 e.g. setFieldValue( "Location", "Miami" )