Remove unicode and running .bru files in brc

[RenaMercer]

Hi I got the regex solution from BRU forum which is as follows:
[ ]?\[[^\x00-\x7F]+\]

this regex remove all unicode characters in [] bracket, a slightly modified solution provided by Admin. Now im trying to create scripts using brc. How to use the above regex? If cannot is there a solution to remove unicode characters, specific to brc?

Also, is there a way to apply .bru files to files I want to rename via command line/brc?