Easy quick hypertalk coding question

[william humphrey]

Can someone help me with a function?

If sort all cards by fld "index" doesn't work and fld "index" has a bunch of
numbers in it which aren't in order and skip some values how do I
1. Find out what is the highest value in fld "index"?
2. Find out a list of any numbers that are duplicates?

I'm afraid that I do to much work of this sort in Excel and I can't think of
a way to do this without dumping all the values to memory and working on
them there.