Hello,
I am trying to count the number of transaction I have in the last x hours.
Table is
Transaction_id start_time
format start_time : 'DD/MM/YYYY hh:mm:ss'
I have a parameter called vhour that can go from 1 to 168.
I've written this formula
=count({$<start_time={"$(= '>=' & start_time-($(=vhour))*0.041 & '<=' &now())"}>} distinct transaction_id)
but it seems the first condition '>=$' & start_time-($(=vhour))*0.041 is not working
when I hard-code it like this
=count({$<start_time={"$(= '>=' & '27/04/2018 12:30:00' & '<=' &now())"}>} distinct transaction_id)
it works
Could you please help me fixing the 1st formula ?
Thank you
