only one side of my 2006 jeep grand cherokee air conditioner works

The blend door is not working, the blend door is located under the dash on the passenger side.

thank you, need to bring to someone to fix

Tom. (Some vehicles are set up, that when the refrigerant is low it will only be cool on the driver side) Tom is right. Cold air wasn't blowing out of my passenger side vents. Put a can of refrigerant in and it works like a charm. Thanks Tom!