Could you please elaborate ?
I assume you want to calculate the average of blue dots ('Form Responses').
1. Create calculated field to keep only 'Form Responses'
IIF([Sheet]='Form Responses',[Harga Dasar],null)
2. Put this into 'Detail' mark
3. Create reference line using this variable, instead of the original one.
Please fine attached sample (v2018.1.)
INI DICOBA R.twbx 24.4 KB