How to make a bot an adequate vk_Api list?

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In short .... hello everyone, and I don’t really understand how to give the bot the ability to show lists of birthdays (in lists of more than 100 people\2000 characters) It doesn’t work through an array, but I guess it won’t work through variables either.

If possible, could you explain how else to make it so that after certain actions the bot could add a person to the list (the person himself will write the date to the bot, and the bot will already add it to the list)