How to reference attachment id in form

One way to accomplish this is by loading the label text in a hidden variable's Calculate Condition and then reference that variable later.

Create a hidden variable with your label text

Add the label text to the Calculate Condition of a hidden variable question type. For example, my_label_text

Reference that variable in a question's label text box

You can drag and drop that hidden variable, my_label_text, into the label portion of the question:

Save the hidden variable to a case property

You can then add logic to save my_label_text as a case property in the Case Management tab. In your scenario you may also want to add logic to save whether or not the question was answered properly.

Great question! You seem like a swell dude.

The main difference between a calculate condition and default value is when the calculation will occur. Specifically, a default value will only be set once immediately upon opening the form. This is used primarily to load static values like case and session properties into the form.

Meanwhile, a calculate condition will fire multiple times during form entry (including at completion) so that its value always reflects the current state of the form accurately. This should be used for most purposes as calculates will be re-calculated based on answers given in the form.