Hi Jesus,
I don't think this can be done in the List Options: Get options from MySQL (advanced) text box as you are just entering the MySQL query for the CMS Builder database.
You may be able to enter PHP (with the mySQL connect details, etc) in the List Options: Use options listed below text box but this isn't what it was intended for so would at the very least require some trial and error to test it. Also you would need to make sure the output was when record per line.
Cheers,
Damon Edis - interactivetools.com
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