Having issues with Region3 in roblox lua - lua

Question

I have been trying to work on a Region3 script were when you are in it, it plays a song. But I've come across 2 issues, 1 being it thinks the player is always in it when you the player isn't. And the second being the script runs so fast that it keeps repeating before anything can happen
local RegionPart = game.Workspace.RegionArea
local pos1 = RegionPart.Position - (RegionPart.Size / 2)
local pos2 = RegionPart.Position + (RegionPart.Size / 2)
local Region = Region3.new(pos1, pos2)
while true do
wait()
local burhj = workspace:FindPartsInRegion3(Region, nil, 1000)
local song = game.Workspace.bb
song:Play()
print("THE SCRIPT WORKS!")
end

Answer 1

You query the objects which are in Region, but never used the result and just continued. Loop over burhj and check for valid parts.
In this forum the use of FindFirstChild is suggested:
for i,v in ipairs(burhj) do
local player = v.Parent:FindFirstChild("Humanoid")
if player then
print("player is in region: " + player.Parent.Name)
end
end
Alternatively, you can directly use the player position, if the player object or position is known:
local pos = yourPlayer.HumanoidRootPart.Position
local center = region.CFrame
local size = region.Size
if pos.X > center.X - size.X / 2 and pos.X < center.X + size.X / 2 and ... then
print("player is in region")
end
A helper function, if not already present, might be helpful.
For the second problem, set a flag if the player is in the region. Play the sound when the flag was not already set. Unset the flag if you leave the region.
--here are your vars
local enteredFlag = false
while true do
wait()
if playerIsWithinRegion then --here come whatever approach you chose earlier
if not enteredFlag then
enteredFlag = true
local song = game.Workspace.bb
song:Play()
print("THE SCRIPT WORKS!")
end
else
--no player is in the region, lets reset the flag
enteredFlag = false
end
end