List FilterBy BoolMask return Null

[ck_user]

Hi all,
I am trying to filter Rooms by room name by using List.FilterByBoolMask but not sure why it return null. Needed help here… below is the screen shot

Thanks in advance

[kennyb6]

Try connecting the All Elements of Category output as the list input for List.FilterByBoolMask.

Right now, you are filtering using the parameter names, so the output are parameter names. Element.Id needs elements, so you need to filter the elements.

[stillgotme]

try this instead.

[ck_user]

Thank you very much !

[ck_user]

Thank a lot !