Problem with mouse over and click trigger

I have an object on the stage which shows a layer upon mouse-over and hides it on mouse out. I want the learners to be able to this this, but also if they wish, to click the object to keep the layer visible. 

I have set two triggers, one for the mouse over and one for the click. I have juggled with the order of these triggers but after clicking the object, there's no way I can stop the 'restore on mouse leave' happening (which hides the layer).

Anyone got ideas of how I can get this functionality to work?

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