Merhaba.

I was reading an article about about the impact our names have on our lives, on a Turkish news website. The article was provided with a headline photo as the one showed below:

There´s one thing I can´t explain about it...

Why does it say yaşadınız (in the past tense) if the first part refers to the present time? I could justify the future tense "If there´s the letter A in your name, you will live (or you will survive)". But why is it past?

" yaşadı " past tense form of  to live, is a fixed phrase which  used in collaquial lang, meaning " you are lucky ! "

-Antalya´ya 1 haftalık bedava tatil kazandım. Yaşadım valla !

I won 1 week free holiday to Antalya. I am so lucky ! [ I will have great days ! ]

It is expression of  joy because you know that you will have great time /days/luck !

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*Baban sana yeni araba almış. Hadi yaşadın !

I heard that your dad bought you a new car. You lucky,  you will definetely enjoy ittt !!

* Fixed phrases or collaquial expressions should not always be read literal, so the tense of the verb is not important with them.

So , the sentence in that advert, would be something like --->

You [plural] are lucky if you have letter " a " in your name.