raulkaio wrote: Hi,

I'm new at CB. Im coding parte of a website that has 22.000 users and i need to know, when i open somebody profile, how can i get this user id ?

You can use a delimiter field to show existing user id on a profile.

www.joomlapolis.com/support/tutorials/107-use-cases/18353-using-substitutions-throughout-cb

you can create a delimiter field with following substitution in the field description:

This is my user id: [user_id]