Using SQL to replace characters less than Blank

Hi all

I'm looking for an example to replace characters less than Blank (with
blank) ; i found this example at
https://stackoverflow.com/questions/7573321/db2-iseries-sql-clean-up-cr-lf-t
abs-etc :



UPDATE <file>

SET <field> = REPLACE(REPLACE(<field>, x'0D', ' '), x'25', ' ')

WHERE LOCATE(x'25', <field>) > 0

OR LOCATE(x'0D', <field>) > 0



But i receive this error : Message: [SQL0171] Invalid LOCATE function
argument 1. Cause . . . : The specified data type, length, or value of
LOCATE function argument 1 is invalid.



Can some help me ?

Thanks in advance