Specific part of Title tag in other field

Hi everybody, i have multiple titles named as follow:

Title example: Via Verdi - Diamond [OLD 80]

i would like to COPY everything in between [ ] square parenthesis in GENRE field to result as follow:

Title: Via Verdi - Diamond [OLD 80]
Genre: OLD 80

exacltly as that.

please anybody could help? thanks

You can use the Action (Quick)>Guess Values here.
Source: TITLE
Pattern: %dummy% [%genre%]

This will not change the existing Title details.

Hi MotleyG,
thanks for your reply wich solve my problem, but i have another variation to add if it's possible:

Title example: Via Verdi - Diamond [OLD 80] ***

result:

Title: Via Verdi - Diamond [OLD 80] ***
Genre: OLD 80 ***

this means add to genre what comes after ] last parenthesis separated by one space

maybe i ask too much but hope you solve it,
Thanks again

You could try an action of the type "Format value" for GENRE
Format string: $regexp(%title%,'.*\[(.*)\].*',$1)

Another possible solution for your existing content in TITLE
Via Verdi - Diamond [OLD 80] ***
would be:
Action "Format Value":
Format String:
$regexp(%TITLE%,'.*\[(.*)\] (.*)',$1 $2)
That would fill GENRE with
OLD 80 ***
image

Or do you don't want to add the content after the closing ] bracket in GENRE?

Sin título
As you all can see in the picture i post, the rule created by MotleyG copy in genre everything between parenthesis and its ok till here
BUT
in some titles i have one or two or more * after ] parenthesis,
that means i need also whatever comes after ] placed in genre.
hope i explained well

This is an example picture how it should be (with one space before asterisk(s) )
Sin título

You could try an action of the type "Format value" for GENRE
Format string: $replace($regexp(%title%,'.*\[(.*)',$1),']',)

this action not working

Works over here:
grafik

which action could it be?

or

Please post a screenshot of your action.

it should be generic title to do a multiple transfer to a genere

Of course.
But I assumed that you could do the transfer and replace the example string that you supplied with the fieldname %title%.
I can only try expressions with strings that you supply - that is why I show you as proof that my suggestion worked with your example string. If you then find that the pattern does not work, it would need more investigations on your side to find whether the example string was really a typical example or the odd one out.

And for such cases, you could first filter (F3) your list of files and then apply an Action.
For example to get only the tracks listed where the TITLE includes a closing bracket AND some stars:
TITLE HAS ] *

in this picture is exactly shown what i need to do, as you can see in genere (from title) appear what in between square parenthesis and after a space aterisks, in some there is one 2 or more asterisks and in some others no asterisks just what in between parenthesis
Sin título

Thank you for the screenshot.
Now we can see what the source data looks like (well, most of it, the start of the TITLE is cut off ...) and what you want to achieve.

And exactly that could be done with the 2 ways suggested by me and @LyricsLover.
But as you claim that these actions do not work, a screenshot of the action that you applied would help.

well you need to see just part of title where parenthesis are..
i use the Action (Quick)>Guess Values here.
Source: TITLE
Pattern: `%dummy% [%genre%]

this working ONLY if there is nothing after last square parenthesis.
i need to complete this rule to have also what comes after ] parenthesis wich will be the asterisks in case there are (or not).
Maybe i can save this as action without asterisks as i done already and make another one with? dont forget could be more than one asterisks till max 5

Please note that @LyricsLover and me talked about an action of the type "Format value" and not "Guess value"

finally i create 2 actions, one for those titles without asterisks and other one for those with.

Thanks for your support, very appreciated

Actually,

should take of both cases so that there would not need to be 2 actions.