transmission problem shifting
 

hiall i am new to the forum and need some help on my camry don't want to be rude and just post my problem without saying hello. well to the point now i have a 94 automatic coupe, with a 1mz-fe V6. the car runs great, only one problem, my car won't go into reverse. it feels like it isn't shifting in to reverse when i shift to drive it goes foward, it also goes foward in neutral. any idea on what the problem is?how i can fix this for cheap?