Issue with a column as a slicer

[Kolumam]

Hi All,

I have created the below table with the values.

Savings Selector = 
DATATABLE(
    "Index", INTEGER,
    "MyColumns", STRING,
    {
        { 1, "Flat" },
        { 2, "Escalating" },
        { 3, "Discounted"}
    })

Then I create a measure to use a column a a slicer.

Tariff (new) = 
VAR selectedcolumn =
    SELECTEDVALUE ( 'Savings Selector'[Index] )
RETURN
    SWITCH (
        TRUE (),
        selectedcolumn = 1, SUM ( Savings[Flat tariff savings (THB)] ),
        selectedcolumn = 2, SUM (Savings[Escalating tariff savings (THB)] ),
        selectedcolumn = 3, SUM (Savings[Discount tariff savings (THB)]))

The issue now is when I click on the slicer individually it is working fine but if I select multiple items it goes blank as I haven't defined in the Tariff (new). Please see screenshots for understanding.

[Thejeswar]

@Kolumam,

I don't think showing data for multiple Index selections is possible when you are using only one variable to store the value.

A Variable can take only one vale as an input. Hence when you select multiple values in your index, your variable value becomes blank and hence the graph also returns blank