How can I detect if a string is in a table?

Hi, I want to find my string in my table. I want to see if the string is in the table, FindFirstChild is not working.

RemoteEvent.OnServerEvent:Connect(function(Player, Robbery)
	
	local AvailableRobberies = {"ImpossibleJewelry"}
	
	if AvailableRobberies:FindFirstChild(Robbery) then
		
		print("Result")
	end
end)