I’m trying to use vase mode for the first time on a single object (version 1.7.3.50) and these are my options:
any ideas?

just checked, didn’t got removed in any release by BL
edit:
here latest BS release
Hi, this is a screenshot of my options on top of your options.
I also see that you’ve got “G-code output” which I sure don’t have.
Exasperating!
Well, Lo and behold, the settings need to be under “Global” and not “Object”.
Thank you ZunderHD for your response which led me to question why my Bambu Studio was not like your’s.
So, PROBLEM SOLVED.
I had the same problem and found the solution because of you. Thank you so much! Was getting exasperated!
BTW next to the process name you have a small magnifier, if you press on it you get a filed to type, and you can search for any setting name, no matter in which tab/menu from the process settings.
So this is very easy to find some setting by name.