Looking for a simpel image reveal task with selectable tiles

Hi. I'm fairly new to Qualtrics and facing my first challenge.
I want to integrate a task into my Qualtrics survey where participants can select parts of a concealed image to uncover it. Important is how many tiles they chose to uncover before ending the task manually.
Some code in JavaScript would be awesome since there is an easy way to integrate it into Qualtrics via JavaScript Editor.
Thanks in advance for every helpful input.