Passing parameters to automation and adding selection to report

[fhana]

hey,

in my app, i have a button that executes an automation and passes parameters.
in the app i have several alternative states like 'tcd date', 'etr date' etc.
in the parameters i'm defining the value like this 
=GetFieldSelections(tcd_date.autoCalendar.YearMonth, ',', 999, 'tcd date')
in the automation i use add selection to report block like this 

when the automation is run i can see values passed to the block 

but on the generated report, I do not see the selection being applied. What am I missing ?