How can i get table of between 2 number

[F8izz (Fizz)]

local NumberRangeTables = {
	[NumberRange.new(0, 20)] = 8, -- Between 0 to 20 = 8
	[NumberRange.new(21, 75)] = 5, -- Between 21 to 75 = 5
	[NumberRange.new(76, 150)] = 3,
	[NumberRange.new(150, 200)] = 2,
	[NumberRange.new(201, 300)] = 1.5,
	[NumberRange.new(301, math.huge)] = 0.5 
}

function CreateTweenBar()
	RegenBarFrame(BarFrame.Size.X.Scale)
	TweenTrack:Cancel()
	TweenTrack = _TweenService:Create(BarFrame, 
-- ERROR
TweenInfo.new(NumberRangeTables[StairCount]), {Size = Udim2new(0, 0, 1, 0)}) 
	TweenTrack:Play()
end

[Tylerisawsome113 (Tyler)]

What is the error you are getting?
You are setting your indexes for the table to NumberRange instances, in which you can not access them with 1, 2, 3, etc.
I am not entirely sure what you are trying to accomplish here, but a better alternative is probably to just use an if statement.
Ex:

local seconds 
if StairCount >= 301 then
	seconds = 0.5
elseif StairCount >= 201 then
	seconds = 1.5
elseif StairCount >= 150 then
	seconds = 2
elseif StairCount >= 76 then
	seconds = 3
elseif StairCount >= 21 then
	seconds = 5
else
	seconds = 8
end

The only other way to do it in the way you are using the table, is to create a bunch of tables with table.create and then combine them together with table.move, but you are also limited, since using math.huge, will probably not turn out too well.