It seems that I have already answered that question, but I will try to provide more details.
Yes, the Artsakh government also states that the only parties—the only trucks—that are allowed to pass through the Lachin corridor are those of Russian peacekeepers and some Red Cross vehicles.
About the content of the trucks, I can say that a very limited amount of humanitarian aid—mainly medication and some food—was delivered through the Russians and through the Red Cross, but it is not enough to meet the local demand. It doesn't in any way correspond to the local demand.
Also, we should note that the Russians have 2,000 people in Artsakh—in Nagorno-Karabakh—and these trucks are also providing supplies for their contingent.