Fixing index arg access error in createTTS method

src/VAMatlabExecutable.cpp

@@ -1237,7 +1237,7 @@ void createTextToSpeechSignalSource( int nlhs, mxArray *plhs[], int nrhs, const
 
 	ConnectionHandle hHandle = GetConnectionHandle( prhs[ 0 ] );
 	CVAMatlabConnection* pConnection = g_vpConnections[ hHandle ];
-	std::string sName = matlabGetString( prhs[ 2 ], "name" );
+	std::string sName = matlabGetString( prhs[ 1 ], "name" );
 	std::string sID = pConnection->pCoreInterface->CreateTextToSpeechSignalSource( sName );
 	plhs[ 0 ] = mxCreateString( sID.c_str() );
 }