MQL4 ObjectSetDouble Bug!

Hi all,

I have encountered an unexpected bug or error while using the ObjectSetDouble function, following is the program segment.

#define error Print("Error: ", GetLastError());
void Deserializer::Create(long id){
   int len = ArraySize(this.obj);
   for(int i=0; i<len; i++){
      if(!ObjectCreate(id, this.obj[i].name, (ENUM_OBJECT)this.obj[i].type, this.obj[i].subwin, 0, 0)){
         error;
         return;
      }
      int count = ArrayRange(this.obj[i].prop, 0);
      for(int j=0; j<count; j++){
         int p=(int)StringToInteger(this.obj[i].prop[j][_prop]);
         int m = (int)StringToInteger(this.obj[i].prop[j][_mod]);
         
         //double typed property never updated!
         if(this.obj[i].prop[j][_type] == "ENUM_OBJECT_PROPERTY_DOUBLE")
            if(!ObjectSetDouble(id, this.obj[i].name, p, m, StringToDouble(this.obj[i].prop[j][_val]))) error;  /*not updated and no error message*/

         //successfully updated
         if(this.obj[i].prop[j][_type] == "ENUM_OBJECT_PROPERTY_INTEGER")
            if(!ObjectSetInteger(id, this.obj[i].name, p, m, StringToInteger(this.obj[i].prop[j][_val]))) error;
         
         //successfully updated
         if(this.obj[i].prop[j][_type] == "ENUM_OBJECT_PROPERTY_DOUBLE")
            if(!ObjectSetString(id, this.obj[i].name, p, m, this.obj[i].prop[j][_val])) error;

      }
   }
}

Does anyone has an idea?

Thanks in advance.

Ken