I want to bind the sparklines history query time range to something just like how I can with the tag path but for some reason there's not a property for that. For example I want them to be able to change it from last 2 hours to last 1 hour etc... in the actual browser like you could with the regular chart component. Is this possible?
You click the little fx icon under 'Most Recent' and enter an expression, such as a reference to another property, that will be fed in as the number of hours. You can't currently make the units dynamic, but you can always choose the most granular unit you need and do the multiplication yourself.