Buy function not stable

[sam.burn]

using TWS Build 861.5 with Java 1.6.0_01.
Intermittantly the LMT or STP order will get loaded as inactive on IB or not at all. 60% of the time it is ok.
Put the wait in to slow it down but no real change.
What have I missed.

function clickBuyMkt()
{
if ( DAX_CONTRACT_ID > 0 )
{ var ostatus = null;
debugPrintln("Placing a buy mkt order.");
buyOrderId = twslink.call("PLACE_ORDER", DAX_CONTRACT_ID,
0, "BUY", "MKT", nOrderSize, -1, -1, "GTC", 1,0, "", "", -1);
ostatus = twslink.call
("WAIT_FOR_ORDER_STATUS",buyOrderId ,8 ,orderDelay,12);
aOrderIDArray.push(buyOrderId);
debugPrintln(nOrderSize + " buyOrderId = " + buyOrderId
+ " " + ostatus+ " " + aOrderIDArray);
stopPrice = close(0) - 35;
profitPrice = close(0) + 35;
debugPrintln("Placing a sell stop order." + stopPrice);
sellStopOrderId = twslink.call("PLACE_ORDER",
DAX_CONTRACT_ID, 0, "SELL", "STP", nOrderSize, -1, stopPrice, "GTC",
1,buyOrderId, "", "", -1);
ostatus = twslink.call
("WAIT_FOR_ORDER_STATUS",sellStopOrderId ,7 ,orderDelay,12);
aOrderIDArray.push(sellStopOrderId);
debugPrintln("sellStopOrderId = " + sellStopOrderId + " " +
ostatus+ " " + aOrderIDArray );
profitOrderId = twslink.call("PLACE_ORDER", DAX_CONTRACT_ID,
0, "SELL", "LMT", nOrderSize, profitPrice, -1, "GTC",
1,buyOrderId, "", "", -1);
ostatus = twslink.call
("WAIT_FOR_ORDER_STATUS",profitOrderId ,8 ,orderDelay,12);
debugPrintln("Placing a profit limit order." + profitPrice
+ " " + ostatus);
aOrderIDArray.push(profitOrderId);
}
else
{
debugPrintln("Contract is not registered successfully");
}
return;
}