Forums Scripts & Popups how to put /trace results into variable

So it would look something like this?

raw 205:*: {
if ($eval($+(%,didtrace.,$nick),2)) msg $nick Hello $4 and welcome! Today is $date (dd/mm/yyyy) and the time is $time (CST).
haltdef
}

It's not showing anything for $nick when it tries to msg $nick.

Would it be possible to 'shave' the $left side of $4 (starting from the very left and going to a [ ) and get that name? E.x. $4 = name[12345678_12345678@1.2.3.4]

If we can do that, then we'll have the exact name we need.