I have the same question and found this thread in hopes to find the answer. Angelo, the answer you provided is confusing, at least for me:

https://docs.pubcoder.com/pubcoder_code.html

I went to that link and found an entire post about the entirety of what the code is in PubCoder. I don't see an answer to Tony's question. Is there a code snippet we need to access? What is the line of code?

I opened up the example that comes with PubCoder, I found this:
https://ibb.co/dtcvnR9

I'll echo Tony's original question. How do you show the Counter value? How do you reflect a change on an object when a counter is updated?

For an example, if the counter goes to "1", how do we reflect an image to show "1"? When the counter goes to "2" how do we show the number text box show "2"... and so on.

I looked at the example, looked at interactivity, I could not find where the code is at that tells the text box to change. I tried to look at the code/javascript and all I see is an empty window.

If all else fails I'll use Terry's suggestion. There might be a more efficient option, but at least Terry has an understandable way to get it to work. I have no idea what to do with the link Angelo provided before. It got overwhelming.