Volkswagen Bora seat

Hello everyone, I hope you help me, by chance I realized that a driver's pier
had left or I was broken I have not looked very closely, it is a Volkswagen Bora 1.9 TDI 130 hp, you can indicate how I can repair it, that is as I take the seat and how I can repair it. The dock is the one that right next to the lever that causes the seat to go up or down.

Thanks and happy new year to all

You have to disassemble the Agendo from the rails you must get the rail complete, that is, the lower part and the top whole, but before dismantling it, make sure that the spare is or that someone can create that spring so that you do not waste time.