Question: Slider usage for maplets query

I'm just learning to write Maplets for the purpose of using them as a teaching tool. Two questions: 1. I'd like to have a slider that updates a plot argument AND plays the plot's animation but I can't seem to figure out how to write two controls into the slider's options. (I've tried "Action(Evaluate...,SetOption...) to no avail. 2. Is it possible to have the location of the slider read in 'real-time' i.e. as the user moves the slider back and forth a feature in a plot changes? It seems as if the 'onchange' option is required but I can't seem to get this going either. Cheers, Court
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