Set analysis - column contains dates before today.

[LauraMorris]

I am trying to get a count of surveys where the eventdate is before today.

eventdate is in the format DD/MM/YYYY if that makes a difference, this is the same format set as the date format at the start of the load script. It returns  a count of - 

count({<[visitreason2]={"*Survey*"} [eventdate] = {"<=$(=Today())"}} [$_serviceid])

[Vegar]

Your expression  looks OK with one exception, you are missing a comma between the modifiers. Try this expression: 

count({<[visitreason2]={"*Survey*"} , [eventdate] = {"<=$(=Today())"}} [$_serviceid])