The Leeds winger was played at wing-back and heaped praise on the West Brom centre-back.
Dallas played in a more defensive position as his nation beat Latvia 1-0, with West Brom defender Jonny Evans in behind him.
And the 24-year-old thanked Evans for helping him settle at wing-back, while he says he is happy to play wherever the Northern Ireland boss wants him to, even if it involves a lot more running.
Dallas is quoted as saying: "It’s was different for me playing wing-back. But I had Jonny in behind me. He has played at the highest level and he was keeping me right.
"There was a lot more running involved but I’m just happy to play where the manager wants me."
Could it be something Leeds boss Steve Evans can consider one day? Dallas started well for the Yorkshire side under Uwe Rosler but was criticised for a slight dip in form later in the season.
In his most recent game for United, though, the 24-year-old delivered a brilliant cross to tee up Mirco Antenucci.
Now, with the help of West Brom's Evans, Dallas has learned something new and different at wing-back during the international break.
Leeds beat Wycombe 2-0 on Friday night and face Rotherham United in their first Championship clash after the international break.