I know how to get the highest and the lowest values.
My example below has 3 green sprites that have the UIDs of 3,10 and 11.
Each have 'Variable1' values of 15, 35 and 1.
The UID 10 is the highest and 11 is the lowest.
https://www.dropbox.com/s/p61a7l8qikfak ... .capx?dl=0
Getting the values of the variables from multiple (selected) objects sound like they will need array, functions and possibly families.
Could anyone else look into this issue further?