Hi @b-rentrug,
So the issue is that the EyeX licence agreement prohibits the long term storage of data (we have a whole other department and eye track series for this) which is something that a heatmap requires in order to function.
Whilst you can implement within your code, a ‘count’ to how often a particular area is gazed upon, the creation of a heatmap is something that we cannot officially provide assistance in creating, although there are no great technical hurdles in doing so. Apologies.