LLIllegalOperationException when calling ApplyQuery

GlaxoWellUser6_(Delete)_1659154

Hi,I am using VB.NET to call ApplyQuery. In the sample code below I get an LLIllegalOperationException thrown on my call to ApplyQuery.Any ideas why? Is there sample code anywhere for LAPI in Visual Studio .NET?Dim llSess As New SE.LLSession("us7n85", 2099, "LL9ADM", "us1_auth\blh17479", "NewLife03") Dim llSelectFields As New SE.LLValue() 'the select listDim llOutputResults As New SE.LLValue() 'output parameterDim llSearchBrokers As New SE.LLValue()Dim llSearch As SE.LAPI_SEARCHDim retval As Int16Dim i As Int16 = 0llUsers = New SE.LAPI_USERS(llSess)llSearch = New SE.LAPI_SEARCH(llSess)retval = llUsers.ListUsers(llUserTable)Dim bln As Boolean = llUserTable.isTable()retval = llSearch.GetSearchBrokers(llSearchBrokers)For i = 0 To (llSearchBrokers.size - 1)MessageBox.Show(llSearchBrokers.ToString(i))NextllSelectFields.setList()llSelectFields.add("OTObject")llSelectFields.add("OTName")llSelectFields.add("OTSummary")llOutputResults.setList()llSearch.ApplyQuery(6139, llSelectFields, "(""OTData"" : ""windows"")", SE.LAPI_SEARCH.SORTBYDEFAULT, "", 0, 20, "LivelinkQueryLanguage", llOutputResults)Thanks,Brent