Not able to insert fields in data Lable option in Slicer (New) chart type

Hi All,

I am practicing one dashboard from youtube i which the instructor is abel to add Filed in Lable option fo the Slicer (New) chart option but when i enable this option in my desktop the field inserting place is not accepting or allowing me to inser field in this. I ma bale to chnage the font,size and colour for the lable but not able to insert any field in this opion

I am not sure why this happening.

Could ypou please why this happening and how i can enbale it.

I appreciate your help.

Thanks,

Imran