Melbourne Heart's Aziz Behich still isn't sure if he has done enough to make himself a prime candidate for the Socceroos' problem left-back spot.But the converted attacker is sure of one thing - he is becoming more comfortable in the role which has lifted him into the national team spotlight.Behich, who turns 22 this week, made the most of his long-awaited call-up to the Socceroos, playing all four games in their successful East Asian Cup qualifying campaign in Hong Kong last week.When asked if he felt he had done enough to put his hand up for a regular crack at the Socceroos' left-back role, Behich said: "I hope I did.""I was happy with my performances. At the end of the day it comes down to whether the coach chooses you or not."But I thought I did well, and he gave me a fair bit of game time which I was pretty happy about."I didn't think I'd feature in all four. The more I play there, the more comfortable I get there."Behich was among a plethora of A-League players who made their international debut in Hong Kong, and had an immediate impact.As well as his defensive work, Behich scored twice against Taiwan, and set up several opportunities with his piercing runs forward and quality crosses.Behich was thrilled coach Holger Osieck was prepared to encourage his attacking capabilities as well as his defensive duties."He doesn't want to take the player you are out of you," Behich said.World Cup squad member Richard Garcia, now playing alongside Behich at the Heart, believes the performance showed the A-League had plenty to offer the Socceroos."Under difficult circumstances the performance was pretty good," Garcia said."A lot of guys were making their debuts, the squad had just got together and hadn't played together, and we got the job done."