//Example when modifying checkbox value and modify parent datasource,
// it will have an error unless if you refreshing parent datasource after you modify it,

public boolean modified()
{
//AIFD_ custom exchrate custtrans -> ledgerjournal trans
#Task
LedgerJournalTrans ledgerJournalTransLoc;
FormDataSource fds;

//END

boolean ret;

ret = super();

//AIFD_ custom exchrate custtrans -> ledgerjournal trans
ttsBegin;
if(this.checked())
{
select forUpdate LedgerJournalTransLoc where ledgerJournalTransLoc.RecId == originator.RecId;
LedgerJournalTransLoc.ExchRate = CustTrans.ExchRate;
ledgerJournalTransLoc.update();
}
else
{
select forUpdate LedgerJournalTransLoc where ledgerJournalTransLoc.RecId == originator.RecId;
LedgerJournalTransLoc.ExchRate = 100;
ledgerJournalTransLoc.update();

}

ttsCommit;

fds = element.args().record().dataSource();
fds.research(true);

fds.refresh();
//END

return ret;
}