The routineCalendarFromField accepts four parameters
@param 1 String. Fieldname that will be used to establish Min and Max values for the Calendar Date.
@param 2 String. Optional - the name of the Calendar table. If not supplied the default is "MasterCalendar"
@param 3 String. Optional - A prefix that will be prepended to all field names and Set variables created for this calendar. For the set vars, blanks in this string will be replaced with underscores.
@param 4 Number. Optional - First month of the year. If you want to work with a fiscal year starting in April, specify 4.