I am having trouble understanding the combobox behavior. The combobox is in a grid. The rowsource is an array. Valid event calls a method that auto inserts values from array into row fields. Trouble is it acts intermittently. Some values it always run the method, others (majority) don't. I put a break point in the method and the valid call, neither stops at the point. The cursor advances to the next grid column but does not fill the fields it should and does not stop on the break point. Anyone knows why the combobox behaves this way?

** valid event **
LOCAL lcAcctCode,lnIndex
lcAcctCode = allt(This.listitem(This.ListIndex))
lnIndex = This.ListIndex
IF EMPTY(lcAcctCode) OR lnIndex = 0
    MESSAGEBOX('CANNOT LEAVE ACCOUNT CODE EMPTY',16+0,'INVALID ACCOUNT CODE')
    nodefault
ELSE			
    .m_Update_Acct_Data(lcAcctCode)
    .grdJobData.clmCopier.setFocus
ENDIF && EMPTY(lcAcctCode) OR lnIndex = 0

** m_Update_Acct_Data() method **
lparameters cCode
local nPos, nRow
store 0 to nPos, nRow

with ThisForm
    nPos = ASCAN(.aAccts,cCode) && Search for company
    nRow = aSubscript(.aAccts,nPos,1)
    if nPos != 0
	REPLACE org_code WITH SUBSTR(Trim(.aAccts(nRow,2)),3)
	REPLACE eo WITH .aAccts(nRow,3)
	REPLACE Modl WITH .aAccts(nRow,5)
	REPLACE Grant WITH .aAccts(nRow,6)
	REPLACE Contract WITH .aAccts(nRow,7)
	REPLACE Proj WITH .aAccts(nRow,8)
    endif
endwith