How Do I change the key I inserted into my giveaway?

You can wait until it ends, then before you send it you get the option of removing/changing the key :)

Ninja edit: just remember to change it before sending it :P

I don't think that you can edit it while the giveway is running, but after the end there'll be a modify button on the giveaway's winner page

It's not changeable while the giveaway is running, you need to wait for it to end and you can edit thekey before you send it to the winner

thx all ofc :)

edit: its awesome how fast and helppful people are around here. for steamgifts!

Yeah, I had this problem before too. Your thread inspired me to create this suggestion thread.

http://www.steamgifts.com/discussion/p8Lwf/modify-attached-key-after-giveaway-is-created