PL/SQL - Generate Update DML With Special Character?

I have a pl/sql question about interpreting special characters in pl/sql. I am generating an update statement and get an invalid character when the customer name has an ampersand in it (&). I�m now generating the update statement to include the customer name cut up with concatenation characters surrounding the ampersand, for example �CSCP-C�||�&�||�E�. However, pl/sql is still not executing the update.

Here is the code.

SET PAGES 2000;
SET LINES 200;
SET SERVEROUTPUT ON;
SET VERIFY OFF;
spool update_table.log ;

[code]....

The RESULTS follow. Of course, I can copy this statement and execute in sqlplus without a problem.

---------------------------------------------
- UNKNOWN ERROR CONDITION
SQL = UPDATE mytable SET CUSTOMER_CORE = ('DSCP-C' || '&' || 'E') WHERE REC_ID = 170795889
;
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PL/SQL procedure successfully completed.
SQL>