Use Embedded SQL To Update A Date Field to Null

Hi
Has anyone managed to update a date field to *NULL using embedded SQL?

The code looks like:

clear BudgetDate;
  
 
*******************
In the archives, I found this example,
 
d NullInd...
d              s         5i 0
d                             Dim(2)
d                             Based(ptrNullInd)

 
Exec Sql Update FileY
          Set (CustName = :CustName :NullInd)
 
But that doesn't work either.  What am I missing?
 
Thank you    where CdAgid# = :Agid# ;        set CdBudgetDt = :BudgetDateExec Sql Update CaDist%nullind(BudgetDate) = *on;