How to use the inbuild business calender function "dayIsWorkingDay" in IWD

[Surendra]

Hi

I am trying to use the function "dayIsWorkingDay" as part of my rule confition but it is throwing an error.

I am uing the below rule condition.

eval(businessCalendarService.dayIsWorkingDay(getStringValue("IWD_businessCalendarId",$data), getDTValue("IWD_dueDateTime",$data)));

This is throwing an error while the rule is being executed.

I would like to know the format on how to use this function. An example would be really helpful