Dashboard Improvements on Reference Lines

Ijas

Looking for 2 Dashboard enhancements on the Reference Lines tuning

1. Reference Line Value
   1. Currently, if "Constant" is chosen as the source, a manual value must be entered.
      It would be beneficial to allow the use of a global variable in the value field.
      
   2. Ability add an aggregation of a different dataset column
      
2. Have a dynamic reference line
   The reference line should automatically update based on selected filter in the dashboard. There should be a way to define the mapping between the filter selection and the reference line value.