How can I make my model disapear all at once with parts put inside? Also please fix the script. [closed]

first, I would set up a function to get all the objects in a table.

local stuff = {} -- empty table

function get(model) -- function
for i,v in pairs(model:GetChildren()) do -- loop through all objects
if pcall(function() v.Transparency = 0 end) then table.insert(stuff,v) end -- if "Transparency" is a property
get(v) -- repeat loop on the object (for models within models and decals also)
end
end

get(workspace.Exterior) -- get all the Transparency items within "Exterior"

for i = 0,1,.1 do -- loop from 0 to 1 (from visible to invisible)
wait(.1)
for t,k in pairs(stuff) do -- loop through all your parts
k.Transparency = i -- set each part (or decal) to its transparency
end
end

I hope this makes sense. The

pcall(function() v.Transparency = 0 end) then end

basically determines if v, an object or decal or whatever, if it has "Transparency" as a property. if it does have the property, it returns true and does "table.insert(stuff,v)". then it loops upon itself until all objects are inside the table.