diff --git a/src/MultiPlayer/multiplaymgr.cxx b/src/MultiPlayer/multiplaymgr.cxx
index e654b03..760a56c 100644
--- a/src/MultiPlayer/multiplaymgr.cxx
+++ b/src/MultiPlayer/multiplaymgr.cxx
@@ -1446,10 +1446,11 @@ FGMultiplayMgr::SendMyPosition(const FGExternalMotionData& motionInfo)
         PosMsg->jwhtext[1] = XDR_encode_float (pitch);
         PosMsg->jwhtext[2] = XDR_encode_float (roll);
 
-        SGPropertyNode* n = fgGetNode("/sim/instrumentation/gps/indicated-ground-speed-kt");
-        float speed =  n->getDoubleValue(speed);
+        SGPropertyNode* n = fgGetNode("/sim/instrumentation/gps/indicated-ground-speed-kt",false);
+        float speed =  n->getDoubleValue();
         PosMsg->jwhtext[3] = XDR_encode_float (speed);
        
+       /*
         n = fgGetNode("/sim/instrumentation/gps/indicated-vertical-speed");
 
         n = fgGetNode("/sim/instrumentation/airspeed-indicator/indicated-speed-kt");  //指示空速
@@ -1470,7 +1471,7 @@ FGMultiplayMgr::SendMyPosition(const FGExternalMotionData& motionInfo)
         
         //n = fgGetNode("");
 
-
+      */
 
       }
       xdr_data_t* ptr = msgBuf.properties();