加入自动类型转换

PublicTypes/VariableCollection.cs

@@ -233,7 +233,17 @@ namespace Flee.PublicTypes
             {
                 if (variable is IGenericVariable<T> generic)
                 {
-                    return (T)generic.GetValue();
+                    var genericValueResult = generic.GetValue();
+                    var genericValueResultType = genericValueResult?.GetType();
+                    var resultType = typeof(T);
+                    if (genericValueResultType == resultType)
+                    {
+                        return (T)genericValueResult;
+                    }
+                    else
+                    {
+                        return (T)Convert.ChangeType(genericValueResult, typeof(T));
+                    }
                 }
             }