This part won't change color - properties

Question

I am using rbx.lua. Everything works except for the color changing at the bottom.
Please note that the script is not finished, I just stopped at p1.
--Variables--
local r1 = math.random(100)
local r2 = math.random(100)
local r3 = math.random(100)
local p1 = workspace.Part1
local p2 = workspace.Part2
local p3 = workspace.Part3
local c1 = game.ServerStorage.green
local c2 = game.ServerStorage.yellow
local c3 = game.ServerStorage.red
local grn = NumberRange.new(0, 45)
local ylw = NumberRange.new(46, 75)
local red = NumberRange.new(76, 100)
--Randomizing Y Vector Between 0 and 100--
p1.Size = Vector3.new(4, r1, 4)
p2.Size = Vector3.new(4, r2, 4)
p3.Size = Vector3.new(4, r3, 4)
--Setting up colors--
if p1.Size.Y == grn then
p1.BrickColor = c1
end
if p1.Size.Y == ylw then
p1.BrickColor = c2
end
if p1.Size.Y == red then
p1.BrickColor = c3
end

Answer 1

Try this instead:
Remove the NumberRange variables, and replace the if blocks with this:
if p1.Size.Y <= 45 then
p1.BrickColor = c1
elseif p1.Size.Y <=75 then
p1.BrickColor = c2
else
p1.BrickColor = c3
end
The elseif block won’t be checked unless the p1.Size.Y value is above 45. Same for the else block: it won’t be entered unless the value is above 75.
Hope that helps! You were checking to see if a specific value was equal to (==) a range...not if the value was in the range.