Search and Replace BLOB Field Firebird

Does anyone know how to search and replace a string within a BLOB field?  I have a firebird 2.1 Databse and I am trying to search for a word and replace it with another word when it is found.  I have tried downloading some applications to view/edit the BLOB fields but havent had much luck yet.  Is there any app someone would recommend to do this?  How would I write the query to replace the string?  Any help would be appreciated.
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gskoczylasSenior Software DeveloperCommented:
Use FreeAdHocUDF.
gskoczylasSenior Software DeveloperCommented:
Sorry, accidentally  sent an unfinished lists.

Use FreeAdHocUDF library ( Use either the f_BlobReplaceString or the u_BlobReplaceString function.

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rknealAuthor Commented:
Ok, I found a utility that came installed on my server that allows me to view the BLOB data in Firebird.  It has a query writer that allows me to write a query similar to SQL.  Can anyone tell me the syntax of the query to search a BLOB field for the string Processnetreg?

I tried that but it doesnt seem to work.  Since the field isn't actually a text field can I search this way?
Construction "where ... like ..." works, in any case with Blob sub_type 0.
What sub_type has blob in your table? Check DDL.
More details how to work with blob fields -
rknealAuthor Commented:
Works but was in a different language
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