Hi Kat,
It is a hybrid. I looked it up and saw F1 which is the same as saying hybrid. You must buy the plants or seeds every year if you want exactly the same zinnia . If you harvest the seeds, you will have seedling variation. If you have room, you could do a grow out of many seedlings and look for seedlings which appear the same removing the others. (Hopefully you get some that are similar.) If you do this for a few years, you will have a stable OP version of your zinnia.
Remy

Here is a link that might be useful: Zowie! Yellow Flame Zinnia

Remy~

Thank you for a good information about Wowie! Yeah.. I knew it is hybrid! I wish it is not hybrid then.. It is much prettier than catalog or magazine. It shows in different colors. It is hard to explain you! I really enjoy it very much.. Kat

Actually, the correct name is Zowie Yellow Flame, not Wowie.

AW.. Thank you for correct the name. It looks like "WOWIE"! ha It is soo huge bloom and neat in different colors! Have a good day.. Kat