[ANSWERED] Math.random is affecting all bricks with the same script?

I made a script so that with random numbers generated, the block (an ore) changes materials and such. But they all wind up exactly the same. If one block was selected as "Copper", the rest are coppers.

Can anyone help me fix the script without having to change the variable m=math.random

math.randomseed(tick())

local m=math.random(1,1000)

if m > 0 and m < 400 then
	script.Parent.BrickColor=BrickColor.new("Dirt brown")
	script.Parent.Material="Concrete"
	script.Parent.BlockValue="Dirt"
end

if m > 400 and m < 600 then
	script.Parent.BrickColor=BrickColor.new("Rust")
	script.Parent.Material="Ice"
	script.Parent.BlockValue="Copper"
end

if m > 600 and m < 750 then
	script.Parent.BrickColor=BrickColor.new("Institutional white")
	script.Parent.Material="Ice"
	script.Parent.BlockValue="Silver"
end

if m > 750 and m < 900 then
	script.Parent.BrickColor=BrickColor.new("CGA brown")
	script.Parent.Material="Slate"
	script.Parent.BlockValue="Iron"
end

if m > 900 and m < 950 then
	script.Parent.BrickColor=BrickColor.new("New Yeller")
	script.Parent.Material="Ice"
	script.Parent.BlockValue="Gold"
end

if m > 950 and m < 975 then
	script.Parent.BrickColor=BrickColor.new("Pastel Blue")
	script.Parent.Material="Ice"
	script.Parent.BlockValue="Diamond"
end

if m > 975 and m < 985 then
	script.Parent.BrickColor=BrickColor.new("Eggplant")
	script.Parent.Material="Granite"
	script.Parent.BlockValue="Obsidian"
end

if m > 985 and m < 990 then
	t=Instance.new("PointLight")
	script.Parent.BrickColor=BrickColor.new("Really red")
	script.Parent.Material="Cobblestone"
	script.Parent.BlockValue="Adurite"
	t.Parent=script.Parent
	t.Brightness=5
	t.Color=Color3.new(255,0,0)
	t.Range=10
end

if m > 990 and m < 995 then
	a=Instance.new("PointLight")
	script.Parent.BrickColor=BrickColor.new("Forest green")
	script.Parent.Material="Pebble"
	script.Parent.BlockValue="Viridian"
	a.Parent=script.Parent
	a.Brightness=5
	a.Color=Color3.new(85,170,0)
	a.Range=10
end

if m > 995 and m < 999 then
	g=Instance.new("PointLight")
	h=Instance.new("Fire")
	script.Parent.BrickColor=BrickColor.new("Dark blue")
	script.Parent.Material="Foil"
	script.Parent.BlockValue="Bluesteel"
	g.Parent=script.Parent
	g.Brightness=5
	g.Color=Color3.new(0,0,255)
	g.Range=10
	h.Parent=script.Parent
	h.Heat=3
	h.Color=Color3.new(0,0,255)
	h.SecondaryColor=Color3.new(0,0,255)
	h.Size=13
end

if m > 999 and m < 1001 then
	k=Instance.new("Sparkles")
	script.Parent.BrickColor=BrickColor.new("Black")
	script.Parent.Material="Cobblestone"
	script.Parent.BlockValue="Black Iron"
	k.Color=Color3.new(85,0,255)
end

fam it is a simple mistake with your Variables

Example

local ran = math.random(1,1000)
print(ran)

when i run that script the number is gonna be random 1,1000 and no matter how many times i do

print(ran)

the number is still gonna be the same if you don't know what i'm talking about the make a script put it in workspace then run it

local ran = math.random(1,1000)
print(ran)
print(ran)
print(ran)
print(ran)
print(ran)
print(ran)
print(ran)

when you run it u see how the the numbers are the exact same? it is the same with yours. When you run this script the numbers are truly random

local ran = math.random(1,1000)
local ban = math.random(1,1000)
local pan = math.random(1,1000)
local gan = math.random(1,1000)
local fan = math.random(1,1000)
local can = math.random(1,1000)
print(ran)
print(ban)
print(pan)
print(gan)
print(fan)

math.randomseed(tick() needs to be removed, in order for the script to work. Thanks for the answer.