How do I get past Filch in the Slythrin Dormetories

It depends on what part of the level your on.If your in the begining, then you'll see something brown rite in front of you.Then use transfiguration on it and it will turn into what looks like a bookshelf with two ladders.You push that in front of Filch and he'll leave.But if your on the other part then look above the screen that you touch.You'll see a map.You should see a yellow triangle come out from the red dot.That is in Filch's vision.DO NOT GO IN OR NEAR THAT TRIANGLE OR RED DOT!!!!!!!!! When he goes to the right hand side, then hurrry to the statue and PULL it where the blue path leads. The bloody baron will do the rest once your done. Hope it helped! :-)