Sets the value of the current item as a date.
bOK = fhSetValueAsDate(ptr, dtDate)
Pointer must exist. Use fhCreateItem to create new items, if necessary.
ptrBirth = fhCreateItem("BIRT", ptrInd) -- create a birth field ptrBirthDate = fhCreateItem("DATE", ptrBirth) -- create a date subfield for it fhSetValueAsDate(ptrBirthDate, dtDOB) -- set value