problems with driver's side rear folding seat
 

Hi,

I own a 1997 Civic CX hatch. When I bought the car, I stupidly forgot to make sure both back seats folded down. Months later, I realized that the one little flat knob to pull up on the driver's side back seat comes right out. Meaning, it's the top of the flat knob you see plus a stem about 5 inches long. The other side works fine.

I really need both of these seats to fold down, and I don't know if I need a whole new seat on that side or maybe there is a way to fix this? If anyone could help me with advice with this, I would greatly appreciate this.

Thanks!