Filter Linked between Map and Trend graph

Hi,

I have a question that I'm hoping someone may be able to help with please:

I have a map which shows the volumn of x at different locations and I have the number of x over time in a seperate graph.

When I select an instance of x from a bubble, the trend graph shows the correct location but no history is shown only todays date, i.e. a dot.

The filters on the visuals are

Map [Latest Date]

Trend [None]

I would like the graph to dynamically show the historical trend for each location when selected from the map, i.e drop the latest date filter. I've tried using the "edit interactions" with no success.

Any help would be great, I hope it's a simple one. 

Regards

S