Sterling Position how?

[dlj36]

hi,anyone know sterling API?

I have a question that when exit open position,such as "SMCR 100",when I enter hotkey "F7:SSHRT 1000 ",sterling will execute as "SELL 100 ","SSHRT 900".Well,so,I simulate it,see My c++ code:
void Sti_SendOrder(_bstr_t StiSide,_bstr_t StiStock,long StiShares,_bstr_t StiAccount,_bstr_t StiChannel,_bstr_t StiTif,DOUBLE StiPrice,long count,BOOL bdisplay)
{
//Sti var

if(strcmp(StiSide,"")==0)
return;
//CComPtr<ISTIOrder> pISTIOrder;
//pISTIOrder.CoCreateInstance(CLSID_STIOrder);
ISTIOrderPtr pISTIOrder(__uuidof(STIOrder));
pISTIOrder->Side = StiSide;
pISTIOrder->Symbol = StiStock;
pISTIOrder->Quantity = StiShares;
pISTIOrder->Account = StiAccount;
pISTIOrder->Destination = StiChannel;
pISTIOrder->Tif = StiTif;
pISTIOrder->PriceType = ptSTILmt;
pISTIOrder->LmtPrice=StiPrice;
if(bdisplay)
pISTIOrder->Display=100;
long Is=0;
for(int i=0;i<count;i++)
Is=pISTIOrder->SubmitOrder();
}

"SELL 100" can send to market,Then order "SSHRT 900" don't send to market, any one no about this?

Why I send order "Sell 100" "SSHRT 900" not equals Hotkey F7 "SSHRT 1000 shares"?????????????