Can I search for a descendant with a string variable? If not, how would I?

I have some folders in ServerStorage which are labeled 1, 2, 3, 4 and 5. There are items in each of them. I am using a function with a level argument to do this.

Theoretically I could just do this:

function functions.GetLevelItem(level)
    local storage = game:GetService("ServerStorage")
    local search = tostring(level)
    local children = storage.search:GetChildren()
end

I doubt this will work. Is there a workaround to this? Lag is not a concern here, so hacky solutions are OK as long as they are reliable.