Shaft Encoders in VCS

My team and I have made the decision to use shaft encoders for our robot. We are using them on passive wheels for position tracking purposes. I am using VCS C++ Pro. I am having some trouble getting the encoders to work properly. Right now, I have both wires in each encoder declared as a separate encoder. How would I go about combining these values? Also, whenever I print the encoder values to the brain, the values jump from 9 or 20 to something in the 3000s range. How would I fix this? I did previously post, but I did not get an answer and now I am having different problems. Thank you very much.