Looks like Ukraine Lottery uses the same operator GTECH that Florida, California and many other US states use. But still, the local lottery has responsibility to run those games that are provided by the operator in a truthful and transparent manner.
Also, an English tip for you:
Do not use the word "boy" unless you are talking about a small child. Use "guy" instead. Talking about "guys" as "boys" sounds very strange and insulting to Americans.