Pato bagged a brace in Saturday's 3-1 win over Chievo, playing in a 4-3-1-2 formation.
"I came back after the injury, playing first with the Selecao and now Milan. I'm very happy to have played and scored, but above all happy at the victory," he told Milan Channel.
"I need to do my work to help the team, as goals only come as a consequence of what the side does together."
Zlatan Ibrahimovic was alongside Pato and provided both assists, while Ronaldinho supported them in a trequartista role.
"I am happy in my position, as with Brazil I also play as a centre-forward. The rapport with Ibra is good, but the Coach makes the decisions and whoever we are partnered with must work for the team.
"Zlatan gave me two great assists and I thank him for that. Now we have the Champions League against Real Madrid, where we've got to put in a classy performance."