How do I check if there is a player in a folder?

I have a script in ServerScriptStorage that is supposed to check if there is a player in a folder

if #workspace.InBossBattle:GetChildren() >= 1 then
print("Worked")
end

but this doesnt seem to work

try this:

if workspace.InBossBattle:WaitForChild("Humanoid", 5) >= 1 then
	print("Worked")
else
	print("Doesnt Work")
end