Simeon Jackson's 17th goal of the season was enough to see the Gills beat claim a 1-0 victory and climb to second in the table.
"I've seen a lot of hardworking performances from players this season but they had to respond to the criticism I gave them from their first half performance against Accrington on Saturday - and they did," McParland said.
"Gillingham could go up automatically but we matched them across the park. We battled and scrapped and had one chance cleared off the line and another shot ricocheted off a defender and wide.
"Results aren't going right at the moment but let's try and get back to creating the chances and working hard.
"If we can produce that kind of effort we'll win more games than we lose for the rest of this season."