how to set regular expression values?

[adminuniscan]

I need to make an expression that does not take into account the register of letters.

I tried to enter the following expression into the web interface:  /exchange.local/i

but I got no result.

[munbali]

Hello adminuniscan,

do you mean case insensitivity by the "not take into account the register of letters"
if so then you can use The token (?i) that indicates the rest of the regular expression should be treated in case-insensitive mode. Placing this token at the beginning of a case-sensitive regular expression results in a completely insensitive match

feel free to check the following which has a guide to tokens that can be used in regular expressions:
https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA_Admin_Guide_11_1/b_ESA_Admin_Guide_chapter_01000.html#con_1192755