Trying to use the @BusinessDays formula and having problems

I have a computed field for which its value formula should return the number of days from StartDate to EndDate, inclusive, less NonWorkDays and CorporateHolidays.StartDate and EndDate are time-date fields with scalar values.

NonWorkDays is a Dialog List type field which allows multiple values with alias values of “1” and “7” for Sunday and Saturday with the following values in the list of choices:

Sunday | 1

Saturday | 7

CorporateHolidays is a time-date field that allows multiple values.

View (named “para_detail”:

Column 2 formula: CorporateHolidays

Column 3 formula: @TextToNumber(NonWorkDays)

If I take the value from the view’s column 3 (WorkDaysExcluded ) the formula does not work.

Formula for the BusDays (computed) field – version 1:

CorpHolidays := @DbColumn(“” ; “” ; “para_detail” ; 2);

WorkDaysExcluded := @DbColumn(“” ; “” ; “para_detail” ; 3);

calc:=@BusinessDays(StartDate; EndDate; WorkDaysExcluded ; CorpHolidays);

@If(@IsError(calc);NULL; calc)

If I take the value from the NonWorkDays field the formula works.

Formula for the BusDays (computed) field – version 2:

CorpHolidays := @DbColumn(“” ; “” ; “para_detail” ; 2);

calc:=@BusinessDays(StartDate; EndDate; @TextToNumber(NonWorkDays) ; CorpHolidays);

@If(@IsError(calc);NULL; calc)

How can I get this to work from version 1 ?

Thanks,

Dan