How to create dynamic tooltips display for a bar chart

[Anonymous]

I would like to create a dynamic tooltips display (concate a string) for a bar chart when a selection is made. 

Dax Formula: 

Shift dynamic ToolTips = 
VAR sel = VALUES(CollectDetails[ShiftSelection])
RETURN if ( ISFILTERED(CollectDetails[ShiftSelection]), CONCATENATEX(sel, CollectDetails[ShiftSelection], ", ") , BLANK() )

I added this measure into tooltips section of the bar chart control. 

But for some reason the Tooltips is not working. Could be the IsFilter() context can't apply in Bar Chart visual? 

Could someone please help me ? 

Complete PBIX attached. 

[VijayP]

@Anonymous 

In the Chart the Axis is Date and ISFiltered is based on other column hence it is not working in bar chart!

[Anonymous]

Thanks Vijay, 

Is there another function I can use in this case? Since I am not able to use the IsFiltered() function to check on other visuals?

[VijayP · Accepted solution]

@Anonymous 

ISFILTERED(The required Column on the Column Chart) and try it may work, else you can share sample data.