The Manchester City man capped a comeback with the winning goal for his national side on Tuesday after coming off the bench, and believes team showed their quality
Colombia took the lead just before half-time when Dorlan Pabon's free kick deflected off Javier Mascherano, but Argentina drew level through Lionel Messi in the second half.
Sergio Aguero then provided a late winner for Argentina in the Colombian city of Barranquilla.
"Today we begin a new stage," Aguero said, according to Ole. "We must go slowly, but we gained a very important victory in the heat and humidity."
The win put Alejandro Sabella's side's World Cup qualifying campaign back on track, with the Manchester City man praising the talent in the squad.
"In the first half we played well, but in the second, with my introduction, we attacked further," he said. "We have plenty of quality, but it was also important for us to fight back and show our attitude."
After a disappointing 1-1 draw with Bolivia on Friday in Buenos Aires, the win over Colombia now puts the Albiceleste level on seven points with Uruguay in World Cup qualifying, although the 2011 Copa America champions have a game in hand.
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