Converting a string of numbers created by foreach into numbers in a list

I am trying to display a list of numbers that are chosen by increments of 2 between the selected minimum and maximum numbers. When the list is printed, it is printed as a string, and I need to have the list, when clicked, be a list. Whenever I try to have the list open, the list is printed as a string in an error message, separated by numbers.

You do not actually show the output list as text, which would help us advise what you need to do ?

Note: when using the current version, i get an error whenever I try to open the list, because the numbers are in a string, not a list. The error message is as follows: The operation SelectionIndex cannot accept the arguments: , [[10, 12]] the 10 and 12 are sample numbers for testing the algorithm