I'm a 1st time MB owner as of 7days ago. and new to this forum.

I was replacing my Bosch wiper blade, I pulled up on the wiper arm to move it out away from the windshield, but now it seems to be locked in that position. I can't put it back down against the windshield. Is there some sort of release button? Idon't want to push to hard and break something. What am I doing wrong to put the arm back down on the windshield?

Your help is appreciated!
Thanks
Jeff N