Matrix hide data when plus signs are closed - this formula used to work but now it doesn't...

[CharlotteB]

Hello,

When creating a matrix, I don't want to see any values when the plus signs are closed. In the past, I used the measure: 

Measure = IF(ISINSCOPE(table[hierarchy]), SELECTEDVALUE(table[field]), BLANK())

to make data only show when I clicked the plus sign. Now it doesn't work! Could be because I got a new computer and it's windows 11... does anyone have any ideas? Thank you in advance