If I want to follow up on my answer with my code, and ask about errors, how do I do that? In comments it doesnt allow to enter more than certain characters. Would answering your own post be the way to go?
Please do not add this as an "answer" it's really an extension of the question.
You have at least two options:
Edit the question: You can always edit the question with additional information, and add a comment to the answer indicating that it hasn't resolved the issue.
Ask a new question: If the additional details you need to add are significant, or would change the focus of your original question, you can always ask a new question. You can include a link to the original question, plus whatever information would be necessary to provide detail on the second question.
Chat with the answerer: If you have enough reputation (or meet whatever other criteria would apply), you can invite the person who provided the answer that partially/almost worked to a chat. If you don't have sufficient reputation, but they may, you can ask them to start the chat. Or, pass enough info back and forth in the comments, and moving to a chat will be offered as an option. This gives you more options to directly communicate with the individual, and should allow more significant chunks of code to be exchanged.