Language Error with IJCOClientService getJCOClient

Hello to everybody,

we have developed an iview in EP6 SP2 that connect to SAP with <b>IJCOClientService</b> interface.

Everithing works fine,

but when some <b>Turkish</b> guy try to access the iview,

we got the following error:

com.sapportals.portal.prt.connection.ContentExceptionHandler@2aed09 #

com.sap.mw.jco.JCO$Exception: (103) <b>RFC_ERROR_LOGON_FAILURE: Enter one of the installed languages: (case sensitive)</b>

at com.sap.mw.jco.rfc.MiddlewareRFC$Client.nativeConnect(Native Method)

at com.sap.mw.jco.rfc.MiddlewareRFC$Client.connect(Unknown Source)

at com.sap.mw.jco.JCO$Client.connect(Unknown Source)

at manager.Manager.getSapClient(Manager.java:385)

at manager.Manager.loadAttributes(Manager.java:920)

at HRCV$MyDynPage.doInitialization(HRCV.java:92)

Our code is here summarized:

<b>String destinationName = mp.getProperty("SystemIdentifier");

IJCOClientService clService = (IJCOClientService) request.getService(IJCOClientService.KEY);

JCO.Client conn = clService.getJCOClient(destinationName, request);</b>

Why all works with Western European Locale or UTF 8,

<b>but not with Turkish language or Cirillic</b>...

Thanks in Advance