search for a <GS> string in 123 scan

Hi there,


I would like to know if's possible to search for the group separator in a rule? I know it's possible in an action but I would like to trigger it a level higher in the string section?

So instead for searching the string "21" as presented in the screenshot I would like to seach for "<GS>240"

Currently I'm running version 3.2 build 8.0

All suggestions are welcome.