diff --git a/mq4/MtApi.mq4 b/mq4/MtApi.mq4
index e7325d76..a4de19aa 100755
--- a/mq4/MtApi.mq4
+++ b/mq4/MtApi.mq4
@@ -2945,7 +2945,7 @@ void Execute_iBandsOnArray()
    }
 
    param_index++;
-   if (getIntValue(ExpertHandle, param_index, total, _error))
+   if (!getIntValue(ExpertHandle, param_index, total, _error))
    {
       PrintParamError("iBandsOnArray", "total", _error);
       sendErrorResponse(ExpertHandle, -1, _error, _response_error);
@@ -8313,4 +8313,4 @@ void ExecuteRequest_SymbolInfoTick(JSONObject *jo, string &response)
    joTick.put("Volume", new JSONNumber(tick.volume));
 
    response = CreateSuccessResponse("Tick", joTick);
-}
\ No newline at end of file
+}