How do I prefill a new issue's priority through url query params

[Brian Mesh]

I'm using custom urls for getting to a new create issue dialog with some of the fields prefilled (eg https://MYORGHERE.atlassian.net/secure/CreateIssueDetails!init.jspa?pid=10053&issuetype=10004&summary=%5BFLAKY-TEST%5D&labels=FlakyTest&customfield_10029=10022 )

That's generally working. However, the priority of the issue defaults to "highest" when I do it that way (if I just hit the create button on any other view to start a new issue, it defaults to "medium").  I'd like to set this to (I'm trying for "high"), but can't figure out the right additional query param to set this and no matter what I try, it makes no difference.   Could someone help?

Thanks!

[Brian Mesh · Accepted solution]

Nevermind - found my answer (or I made a typo).   It was "priority=4"