Slicer values not dependent on clustered column selection

Hi V-shex,

Here's an example of what I'm talking about. The first image is with nothing selection and shows a clustered column chart, a slicer and a table. Both the slicer and the table have the same field in them (Letter). The second image is when the first column has been selected. It can be seen that the values in the table have been filtered so that only letters which have answered the first column are now seen, however the slicer has not been filtered at all. Is there a way to make it so that when I press the column, the slicer filters by the selection as well?

Thanks for your help.