Honest,
you are trying to convert a list of rules, such as
listOfRules = {x->2, y->3}
into a simpler list {x, y}, with x and y replaced, if I understand correctly. Two suggested approaches:
A) ReplaceAll (short notation /. ) to apply the rules to vector {x, y}:
{x, y} /. listOfRules
B) Part (short notation [[ ]] ) to extract all the second Rule arguments in your list:
listOfRules[[All, 2]]
Hope this helps,
Peter