BTC-E cannot use market orders

[alexxy]

2013-05-29 19:53:58,018 : BTC-eTrend following trade agent is attempting to sell BTC 0.00718285 of BTC 0.15981844 available
2013-05-29 19:53:58,018 : ERROR: Caught unexpected exception, shutting down BTC-e trend following trading agent now!. Details are listed below.
java.lang.UnsupportedOperationException: Market orders not supported by BTCE API.
at com.xeiam.xchange.btce.service.polling.BTCEPollingTradeService.placeMarketOrder(BTCEPollingTradeService.java:70)
at org.aido.atp.TrendTradingAgent.marketOrder(TrendTradingAgent.java:568)
at org.aido.atp.TrendTradingAgent.evalAsk(TrendTradingAgent.java:439)
at org.aido.atp.TrendTradingAgent.run(TrendTradingAgent.java:344)
at java.lang.Thread.run(Thread.java:722)