replaceAll('"test"','"','''')
The string to replace needs to be placed between single quotes, also the value to replace it with should be escaped because it's a single quote.
Hi
Refer to this image as well as link to refer you also go with “Replace first” ,“Replace Ends” or “ReplaceAll” functions
https://docs.mendix.com/refguide/string-function-calls/#13-replaceall
If it work for you requirment please accept me answer.
Regards,
Dhanalakshmi.R