Phil Brown wants the same intensity and purpose his side displayed on Boxing Day to be on show on Saturday against Shrewsbury Town.
Blues swept aside a Charlton side who were in the top six heading into the game with one of their best performances of the season.
And the Blues chief is expecting more of the same against Shrewsbury Town.
“Pressure is a funny thing,” he said
“People say you have to take the pressure off the players but if they don’t realise or understand what the game is all about and certainly what the demands of this football club are, then they shouldn’t be here.
“We found out on Boxing Day that they do care, they did show an intent and a purpose from minute one.
“The closing down was on the money, the quality was on the money and the finishing, ultimately on the day, was on the money and we went onto be worthy winners.
“It was nice, and not a rarity, for a Manager to come in and eulogise about my team’s performance, and that’s what Karl Robinson did.
“It was a thoroughly deserved win and a thoroughly deserved performance but we need more of that now.”
Brown, like most of the division, has been impressed by the Shrews who are second in the Sky Bet League One standings having survived relegation with three points last season against Blues.
“Their Manager is very meticulous in his preparation and he will be preparing his team to, maybe play a different way, I’m not too sure,” Brown added.
“They are well versed, well organised, they’re well drilled and it will be a tough game, there is no doubt about it.
“Our mentality has got to be the same as the Charlton mentality, starting the game from minute one we have to get after them, close them down and then try and play the kind of football that we did play.
“There’s a number of things that have to happen on Saturday and it has to start from minute one.”