diff --git a/lib/api/GwApi.h b/lib/api/GwApi.h
index 9209895..61b2564 100644
--- a/lib/api/GwApi.h
+++ b/lib/api/GwApi.h
@@ -58,9 +58,19 @@ class GwApi{
                 }
             };
             using Ptr = std::shared_ptr<Base>;
-        public:
+        protected:
             virtual bool iset(const String &file, const String &name, Ptr v) = 0;
             virtual Ptr iget(const String &name, int &result) = 0;
+        public:
+            template <typename T>
+            bool set(const T &v){
+                return false;
+            }
+            template <typename T>
+            T get(int &res){
+                res=-1;
+                return T();
+            }
         };
         class Status{
             public:
@@ -225,16 +235,13 @@ class GwApi{
  * 
 */
 #define DECLARE_TASKIF_IMPL(task,type) \
-    static bool apiSet##type(GwApi *a,const type &v){ \
-        if (! a || ! a->taskInterfaces()) return false; \
-        return a->taskInterfaces()->iset(__FILE__,#type,GwApi::TaskInterfaces::Ptr(new type(v)));\
+    template<> \
+    inline bool GwApi::TaskInterfaces::set(const type & v) {\
+        return iset(__FILE__,#type,GwApi::TaskInterfaces::Ptr(new type(v))); \
     }\
-    static const type apiGet##type(GwApi *a, int &result) {\
-        if (! a || ! a->taskInterfaces()) {\
-            result=-1; \
-            return type(); \
-            }\
-        auto ptr=a->taskInterfaces()->iget(#type,result); \
+    template<> \
+    inline type GwApi::TaskInterfaces::get<type>(int &result) {\
+        auto ptr=iget(#type,result); \
         if (!ptr) {\
             result=-1; \
             return type(); \
diff --git a/lib/buttontask/GwButtonTask.cpp b/lib/buttontask/GwButtonTask.cpp
index 49a2bb1..9ea4beb 100644
--- a/lib/buttontask/GwButtonTask.cpp
+++ b/lib/buttontask/GwButtonTask.cpp
@@ -25,8 +25,9 @@ class FactoryResetRequest: public GwMessage{
 };
 void handleButtons(GwApi *api){
     GwLog *logger=api->getLogger();
+    GwApi::TaskInterfaces *interfaces=api->taskInterfaces();
     IButtonTask state;
-    if (!apiSetIButtonTask(api,state)){
+    if (!interfaces->set(state)){
         LOG_DEBUG(GwLog::ERROR,"unable to set button state");
     } 
     #ifndef GWBUTTON_PIN
@@ -71,7 +72,7 @@ void handleButtons(GwApi *api){
                 LOG_DEBUG(GwLog::LOG,"Button press stopped");
             }
             if (state.state != lastState){
-                apiSetIButtonTask(api,state);
+                interfaces->set(state);
             }
             continue;
         }
@@ -81,7 +82,7 @@ void handleButtons(GwApi *api){
             LOG_DEBUG(GwLog::LOG,"Button press started");
             state.pressCount++;
             state.state=IButtonTask::PRESSED;
-            apiSetIButtonTask(api,state);
+            interfaces->set(state);
             lastReport=now;
             continue;
         }
@@ -96,7 +97,7 @@ void handleButtons(GwApi *api){
             state.state=IButtonTask::PRESSED_10;
         }
         if (lastState != state.state){
-            apiSetIButtonTask(api,state);
+            interfaces->set(state);
         }
         if (now > (firstPressed+PRESS_RESET_TIME)){
             LOG_DEBUG(GwLog::ERROR,"Factory reset by button");
diff --git a/lib/ledtask/GwLedTask.cpp b/lib/ledtask/GwLedTask.cpp
index 17dcc07..3877a6c 100644
--- a/lib/ledtask/GwLedTask.cpp
+++ b/lib/ledtask/GwLedTask.cpp
@@ -50,7 +50,7 @@ void handleLeds(GwApi *api){
     {
         delay(50);
         GwLedMode newMode = currentMode;
-        IButtonTask buttonState = apiGetIButtonTask(api, apiResult);
+        IButtonTask buttonState = api->taskInterfaces()->get<IButtonTask>(apiResult);
         if (apiResult >= 0)
         {
             switch (buttonState.state)