diff --git a/lang/main.c b/lang/main.c
index 2ad9fea..00bcf26 100644
--- a/lang/main.c
+++ b/lang/main.c
@@ -40,7 +40,14 @@
 }
 
 struct object;
-typedef struct object *(object_call)(struct object*, struct object*);
+
+#define ARGS_MAX 8
+
+typedef struct {
+	struct object *args[ARGS_MAX];
+} argstack;
+
+typedef struct object *(object_call)(struct object*, int, argstack*);
 
 typedef struct {
 	int symbol;
@@ -58,7 +65,12 @@
 
 object *create_object(int value);
 
-object *add_objects(object *objA, object *objB) {
+object *add_objects(object *objA, int args, argstack *stack) {
+	if(args != 1) {
+		printf("ERROR: wrong arg countnull\n");
+		abort();
+	}
+	object *objB = stack->args[0];
 	if(objB == NULL) {
 		printf("ERROR: objA is null\n");
 		abort();
@@ -94,12 +106,12 @@
 	*objptr = NULL;
 }
 
-object *dispatch_call(object *obj, int sym, object *arg1) {
+object *dispatch_call(object *obj, int sym, int args, argstack *stack) {
 	for(int i = 0; i < obj->calls_count; ++i) {
 		call_mapping *curr_call = &obj->calls[i];
 		int symbol = curr_call->symbol;
 		if(symbol == sym) {
-			return curr_call->call(obj, arg1);
+			return curr_call->call(obj, args, stack);
 		}
 	}
 	printf("ERROR: no call found to dispatch\n");
@@ -113,7 +125,9 @@
 	printf("symb %i\n", find_symbol("b"));
 	object *numA = create_object(5);
 	object *numB = create_object(3);
-	object *numC = dispatch_call(numA, find_symbol("Add"), numB);
+	argstack stack;
+	stack.args[0] = numB;
+	object *numC = dispatch_call(numA, find_symbol("Add"), 1, &stack);
 	printf("numC value is %i\n", numC->value);
 	printf("numA is %p\n", (void*)numA);
 	printf("numB is %p\n", (void*)numB);