Custom code Miror Input box to output text with multiple input sources

I am trying to display an output text composed of multiple inputs field in a webflow page. I got it to work fine with one input source and display instantly/miror into the output with the following tutorials.

I am struggling to get the output to display multiple sources and concatenate multiple inputs, ideally from an input text + a checkbox field and another text…(see illustration here) into one output.

If you can help that would be awesome.

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