>Hi everybody,
>
>I have the following code in the lAddBlank_Assign method (this is a custom property of the combobox):
>

LPARAMETERS vNewVal

*To do: Modify this routine for the Assign method
WITH THIS
	IF m.vNewVal AND ASCAN(.aRowSource,SPACE(1),1,-1,1) = 0
        	DIMENSION .aRowSource[ALEN(.aRowSource,1)+1, ALEN(.aRowSource,2) ] && add one more row
		AINS(.aRowSource,1) && inserts a row
		PRIVATE lnI
                FOR lnI =1 TO ALEN(.aRowSource,2)
   		    .aRowSource[m.lnI] = " "
		NEXT
                .aRowSource[2] = CAST(NULL AS C)  && NULL literal it is a Logical
        ENDIF
       .lAddBlank = m.vNewVal
ENDWITH

AND

SET NULLDISPLAY TO "?"

>
>The code is executed. However, the value for that blank row is empty and not null. Does it mean, that the comobobox with the array as rowsource can not have a null value inserted? Should I try to replace myself the empty value with NULL? Do you have ideas what could be wrong?
>
>The original value is NULL in the table.

NULL WITH DATATYPE = NULL OR NULL WITH A KNOWN DATATYPE :)
>
>Thanks a lot in advance.