How to replace following OBJECT(o) with space from payload using expression component in Mule?

Question

How to replace following OBJECT(o) with space from payload using expression component in Mule? I have tried to use the following expression but it does not work.

<expression-transformer expression="#[payload.replaceAll('OBJECT(o)', ' ')]" doc:name="Expression"/>

Answer 1

You need to use replace (see Mulesoft docs). Note the escape character ('\') before the internal parentheses.

payload replace /(OBJECT\(o\))/ with " "