Replacement of front passenger door latch cable

I recently took the car to my mechanic and they could not fix the issue. They repeatedly were sent the wrong replacement. They said they needed to replace the whole assembly for $270.00. I found the Doorman cable at AutoZone for under $50.00. Took off the door panel today and discovered that the whole cable was missing so I was not sure how both ends were connected. Went back to AutoZone and one of there guys was able to attach one end the actual latch end went back home attached the handle end and put the door back together. It does not work I am thinking I have the wrong part or it is not attached correctly. Without seeing the original cable in place I am just not sure. The problem with the cable was at the handle end I thought when I first took the door panel off. The replacement part has a yellow knob on the latch end and it did go into the latch with a little effort, but I am wondering if it is seated right or even the right part. I would appreciate any help you can give.