I need help with a script cloning a part multiple times at random locations?

I need help with a script cloning a part mutliple times at random locations Hello I am new at coding and after some research i came up with this..

while true do       
    local part = game.ServerStorage.bush
    local clonedbush = part:Clone() 
    local x = math.random(-1020,1024)
    local y = 1
    local z = math.random(-1020,1024)--where the models will spawn


    clonedbush.Parent = game.Workspace --puts clone in game
    clonedbush:SetPrimaryPartCFrame(CFrame.new(x, y, z))
    wait(3)--how long to spawn more
end 

yes the model is called bush... This code wont spawn more than 1 model and it will spawn it at the same location and not at a random one, please help me fix this.