[WriteLog] How to Add [OPERATOR] and populate it after the fact

[DanW]

In the RST Special Event, I wanted to add the Operator (KL1JP) to my ADIF
export file (after I logged 130 entries).  I can easily (and did) add
[OPERATOR] field to the working fields within my writelog  RST-KL1JP.wri
logging file after the event but how can I populate my call to all 130+
entries in the Field without typing each one in.  Granted, this is "after
the fact - fix it issue"... If I add the KL1JP to the first entry within the
.wri file and I export it, then only that first field in the ADIF contains
the entry as KL1JP as OPERATOR.  The remaining ADIF entries (129) do not
contain the ADIF entry OPERATOR nor my call.  If I added the OPERATOR field
beforehand, it might have been easier but how can I fix this?  .  I don't
see a SQL database command manner to add my call.  Tips, suggestions,
comments appreciated.

Dan KL1JP