I want to make a drop down in action while changing the existing VM memory size instead of entering the value manually .
If you see the attachment .
how can i do that ?
No good way to do this unless you're on vRA 7.4 and can use custom forms. The other method would be to use XaaS to wrap a composite blueprint, which is an ugly hack and requires some doing.
Thanks for the answer ,
Can you help me how to do that in 7.4 so i can test in my lab and showcase them
You use custom forms. It's very straightforward if you've taken it for a test drive.
While custom forms is a way and 100% look better, can achive something similar in both 7.3 and 7.3 with the use of component profiles too, while it more t-shirt sizing you can make a set just increasing the memory in the ratios you want