Try something like replaceAll
replaceAll($yourString, '.qas$', '.com')
It will replace .qas if it occurs at the end of the string with .com.
Hi Mahendra,
You can use replace all function.
Check this document for your referance.
https://docs.mendix.com/refguide/string-function-calls/#13-replaceall
eg:
replaceAll($string , '.qas', '.com')
Yes, you can replace the content with Batch replace.
Check this document for Batch replace.
https://docs.mendix.com/refguide/batch-replace/