There is a slicer on the left with five items in it, a table showing the actual contents of the table (I’ve disabled visual interactions so the slicer doesn’t slice the table) with five rows and a card showing the output of the following measure:
Selected Number = SELECTEDVALUE(MyNumbers[Column1], "Nothing Selected")In the screenshot above you can see I have selected the value 78 in the slicer and the measure – as you would expect – displays that value.
Now what happens when you refresh the dataset and the table contains a different set of numbers?
Read on for the full explanation.