diff --git a/lib/src/main/java/net/tomatentum/cutin/method/BestCandidateMethod.java b/lib/src/main/java/net/tomatentum/cutin/method/BestCandidateMethod.java
index 618a7cd..4919782 100644
--- a/lib/src/main/java/net/tomatentum/cutin/method/BestCandidateMethod.java
+++ b/lib/src/main/java/net/tomatentum/cutin/method/BestCandidateMethod.java
@@ -1,44 +1,23 @@
 package net.tomatentum.cutin.method;
 
 import java.lang.reflect.Method;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
-import java.util.stream.Stream;
 
 import net.tomatentum.cutin.ReflectedMethodFactory;
 import net.tomatentum.cutin.container.MethodContainer;
 import net.tomatentum.cutin.util.ReflectionUtil;
 
-public class BestCandidateMethod<I extends Object, C extends Object> extends ReflectedMethod<I, C> {
+public abstract class BestCandidateMethod<I extends Object, C extends Object> extends ReflectedMethod<I, C> {
 
     private String methodName;
-    private I identifier;
-    private List<Object> additionalParameters;
     
-    public BestCandidateMethod(String methodName, Object containingObject, I identifier, Object... additionalParameters) {
+    protected BestCandidateMethod(String methodName, Object containingObject) {
         super(getMethod(containingObject, methodName), containingObject);
         this.methodName = methodName;
-        this.identifier = identifier;
-        this.additionalParameters = Arrays.asList(additionalParameters);
-    }
-
-    public BestCandidateMethod(String methodName, Object containingObject, Object... additionalParameters) {
-        super(getMethod(containingObject, methodName), containingObject);
-        this.methodName = methodName;
-        this.identifier = null;
-        this.additionalParameters = Arrays.asList(additionalParameters);
-    }
-
-    @Override
-    public Object getParameter(Object context, int index) {
-        return additionalParameters.get(index);
-    }
-
-    @Override
-    public I identifier() {
-        return this.identifier;
     }
 
     @Override
@@ -47,10 +26,9 @@ public class BestCandidateMethod<I extends Object, C extends Object> extends Ref
             .filter(x -> x.getName().equals(methodName))
             .filter(x -> !x.isBridge())
             .toArray(Method[]::new);
-        Class<?>[] parameters = Stream.concat(
-                Stream.of(context.getClass()),
-                additionalParameters.stream().map(Object::getClass)
-            ).toArray(Class<?>[]::new);
+        Class<?>[] parameters = getCurrentParameterList(context).stream()
+            .map(Object::getClass)
+            .toArray(Class<?>[]::new);
         super.method = ReflectionUtil.getMostSpecificMethod(methods, parameters);
         return super.run(context);
     }
@@ -61,11 +39,6 @@ public class BestCandidateMethod<I extends Object, C extends Object> extends Ref
             .findFirst().orElse(null);
     }
 
-    //TODO add result Doc based Parser (which run before produce)
-    public void identifier(I identifier) {
-        this.identifier = identifier;
-    }
-
     @Override
     public boolean equals(Object obj) {
         if (obj instanceof BestCandidateMethod<?, ?> bcMethod) {
@@ -80,27 +53,37 @@ public class BestCandidateMethod<I extends Object, C extends Object> extends Ref
         return Objects.hash(containingObject.getClass(), methodName);
     }
 
+    private List<Object> getCurrentParameterList(C context) {
+        List<Object> parameters = new ArrayList<>();
+        int c = 0;
+        Object last;
+        while ((last = getParameter(context, c)) != null) {
+            parameters.add(last);
+            c++;
+        }
+        return parameters;
+    }
+
     public abstract static class Factory<I extends Object, C extends Object> implements ReflectedMethodFactory.Factory<I, C> {
 
         private MethodContainer<I, C> methodContainer;
         private String methodName;
-        private Object[] additionalParameters;
 
-        protected Factory(MethodContainer<I, C> methodContainer, String methodName, Object... additionalParameters) {
+        protected Factory(MethodContainer<I, C> methodContainer, String methodName) {
             this.methodContainer = methodContainer;
             this.methodName = methodName;
-            this.additionalParameters = additionalParameters;
         }
 
         @Override
         public Optional<ReflectedMethod<I, C>> produce(Method method, Object containingObject) {
-            BestCandidateMethod<I, C> bcMethod = new BestCandidateMethod<>(
-                methodName, containingObject, additionalParameters);
-            if (methodContainer.methods().contains(bcMethod))
+            Optional<BestCandidateMethod<I, C>> bcMethod = bcProduce(methodName, containingObject);
+            if (bcMethod.isEmpty() || methodContainer.methods().contains(bcMethod.get()))
                 return Optional.empty();
-            return Optional.of(bcMethod);
+            return Optional.of(bcMethod.get());
         }
 
+        protected abstract Optional<BestCandidateMethod<I, C>> bcProduce(String methodName, Object containingObject);
+
     }
     
 }
diff --git a/lib/src/main/java/net/tomatentum/cutin/method/ReflectedMethod.java b/lib/src/main/java/net/tomatentum/cutin/method/ReflectedMethod.java
index 58532f2..2988beb 100644
--- a/lib/src/main/java/net/tomatentum/cutin/method/ReflectedMethod.java
+++ b/lib/src/main/java/net/tomatentum/cutin/method/ReflectedMethod.java
@@ -53,7 +53,7 @@ public abstract class ReflectedMethod<I extends Object, C extends Object> {
         List<Object> parameters = new ArrayList<>();
         
         for (int i = 0; i < parameterCount; i++) {
-            Object parameter = getParameter(context, i-1);
+            Object parameter = getParameter(context, i);
             logger.trace("Found parameter {}={} for method {}", parameter != null ? parameter.getClass().toString() : " ", parameter, ReflectionUtil.getFullMethodName(method));
             parameters.add(parameter);   
         }
diff --git a/lib/src/test/java/net/tomatentum/cutin/ReflectedMethodTest.java b/lib/src/test/java/net/tomatentum/cutin/ReflectedMethodTest.java
index 3bb28a7..6b0438e 100644
--- a/lib/src/test/java/net/tomatentum/cutin/ReflectedMethodTest.java
+++ b/lib/src/test/java/net/tomatentum/cutin/ReflectedMethodTest.java
@@ -4,7 +4,6 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import org.junit.jupiter.api.Test;
 
-import net.tomatentum.cutin.method.BestCandidateMethod;
 import net.tomatentum.cutin.method.ReflectedMethod;
 
 class ReflectedMethodTest {
@@ -14,16 +13,16 @@ class ReflectedMethodTest {
         ReflectedMethod<String, String> method = new TestReflectedMethod(new TestMethodClass());
         Object result = method.run("testContext");
         assertTrue((boolean)result);
+        System.out.println("Success");
     }
 
     @Test
     void testBCMethod() {
-        ReflectedMethod<String, Double> method = new BestCandidateMethod<String, Double>(
+        ReflectedMethod<String, Double> method = new TestBestCandidateMethod(
             "test", 
-            new TestMethodClass(),
-            "ident",
-             "testString");
+            new TestMethodClass());
         Object result = method.run((double)4);
         assertTrue((boolean)result);
+        System.out.println("Success");
     }
 }
diff --git a/lib/src/test/java/net/tomatentum/cutin/TestBestCandidateMethod.java b/lib/src/test/java/net/tomatentum/cutin/TestBestCandidateMethod.java
new file mode 100644
index 0000000..49074bf
--- /dev/null
+++ b/lib/src/test/java/net/tomatentum/cutin/TestBestCandidateMethod.java
@@ -0,0 +1,28 @@
+package net.tomatentum.cutin;
+
+import net.tomatentum.cutin.method.BestCandidateMethod;
+
+public class TestBestCandidateMethod extends BestCandidateMethod<String, Double> {
+
+    protected TestBestCandidateMethod(String methodName, Object containingObject) {
+        super(methodName, containingObject);
+    }
+
+    @Override
+    public Object getParameter(Double context, int index) {
+        switch (index) {
+            case 0:
+                return context;
+            case 1:
+                return "testString";
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    public String identifier() {
+        return "ident";
+    }
+    
+}
diff --git a/lib/src/test/java/net/tomatentum/cutin/TestReflectedMethod.java b/lib/src/test/java/net/tomatentum/cutin/TestReflectedMethod.java
index 08611d6..b1264e6 100644
--- a/lib/src/test/java/net/tomatentum/cutin/TestReflectedMethod.java
+++ b/lib/src/test/java/net/tomatentum/cutin/TestReflectedMethod.java
@@ -13,7 +13,14 @@ public class TestReflectedMethod extends ReflectedMethod<String, String> {
 
     @Override
     public Object getParameter(String context, int index) {
-        return 2;
+        switch (index) {
+            case 0:
+                return context;
+            case 1:
+                return 2;
+            default:
+                return null;
+        }
     }
 
     @Override