Dopóki - Dopóki nie - Dopóty (EXAMPLES)

Hi

Can someone speak about them whith some examples and when we use them?

Thanks

Dopóki nie pójdziesz do sklepu po mleko, dopóty nie dam ci obiadu.
Until you go to store for milk, I won't give you dinner.

Thanks for this exemple. Apparently we use the future after this word.
What is this DOPÓTY?
I've never seen this word before.
Do we have to use them together?

Thanks for your coming answers

There are two situations when you use 'dopóki':
1. In the meaning of 'until' (sth lasts until sth else happens) - then you usually add 'nie'.

Poczekam tutaj, dopóki moja siostra nie wróci.
I'll wait here until my sister is back.

2. Meaning 'as long as'

Dopóki walczysz, jesteś zwycięzcą.
As long as you fight, you're a winner.

Of course it's possible to rewrite the above sentence:
Dopóki się nie poddasz, jesteś zwycięzcą.
Until you surrender, you're a winner.

The word 'dopóty' means more or less the same, but can be used only with 'dopóki' in the same sentence. The structure is: dopóki-condition-dopóty-action

Kamil gave a good example :)

Thank you Zafrira for your answer.
I knew there was something strang with this word.
I hope I can use it well in the future thanks to you.