How do I change the rear windshield wiper on my 1999 Isuzu Amigo?

I installed new front windshield wipers on 1999 Isuzu Amigo with ease. But the rear wiper refuses to come off. It seems to be different from the front wipers and no amount of pulling or pressing on what looks like the release tab works. Please help!How do I change the rear windshield wiper on my 1999 Isuzu Amigo?
sometimes you need to pull the release but ask your counter person at you local parts store they are a wiz at wiper blades