Drag&Drop - submit 'empty' response as wrong
A little struggle here with custom drag&drop. I have time limit for question - 30 seconds. When timeline of the slide ends, trigger submits D&D interaction.
And when user haven't done any interaction on the slide (in this case - haven't dragged and dropped anything), there would be alert that "you should answer before submitting". Yeah, ok, but they didn't answer and shouldn't get any points, so for me, the question is simply answered wrong.
How I can force Storyline to make that scenario automatically as wrong answer and show wrong layer? I can handle every other freeform with some hacks, but couldn't come up with anything regarding D&D.
I could simply trigger the wrong answer layer, but how it will affect the final score on Results page? If user answers correct he/she should get 10 points, if wrong - 0 points at all. But the final score will be shown as percent on LMS, so without submitting, will it consider that missing 0/10 points in final score?