How to replace transmission range sensor

i have taken off the top screw 15mm nut and remove part off and also removed screws on each side but now i am looking at a small screw with threads that attached to the top bolt i took off earlier but when i left up to pull sensor out it seems like that screw is still holding it ,does the TRS suppose to lift up over the screw or do i have to get the screw out

the shaft that goes to the valve body is what you see. that stays there. look at the new sensor and you will see the it id keyed to go on 1 way. be patient and work it up with a screw driver.

Roy