diff --git a/src/asl/parser.go b/src/asl/parser.go
index e17bbf6..6aab297 100644
--- a/src/asl/parser.go
+++ b/src/asl/parser.go
@@ -1,7 +1,7 @@
 package asl
 
 import (
-	"strconv"
+	
 )
 
 const TAB = "    "
@@ -217,19 +217,29 @@ func parseFunctionParameter() {
 	if accept("{") {
 		return
 	}
-
-	i := int64(0)
+	
+	appendOut("params [", false)
 
 	for !accept(")") {
 		name := get().token
 		next()
-		appendOut(name+" = _this select "+strconv.FormatInt(i, 10)+";", true)
-		i++
+		
+		if accept("=") {
+		    next()
+		    value := get().token
+		    next()
+		    appendOut("[\""+name+"\","+value+"]", false)
+		} else {
+		    appendOut("\""+name+"\"", false)
+		}
 
 		if !accept(")") {
 			expect(",")
+			appendOut(",", false)
 		}
 	}
+	
+	appendOut("];", true)
 }
 
 func parseReturn() {
diff --git a/src/asl/parser_test.go b/src/asl/parser_test.go
index f84a9dc..5657977 100644
--- a/src/asl/parser_test.go
+++ b/src/asl/parser_test.go
@@ -57,7 +57,7 @@ func TestParserSwitch(t *testing.T) {
 
 func TestParserFunction(t *testing.T) {
 	got := getCompiled(t, "test/tokenizer_func.asl")
-	want := "TestFunction = {\r\nparam0 = _this select 0;\r\nparam1 = _this select 1;\r\nreturn true;\r\n};\r\n"
+	want := "TestFunction = {\r\nparams [\"param0\",\"param1\"];\r\nreturn true;\r\n};\r\n"
 
 	equal(t, got, want)
 }
@@ -85,7 +85,7 @@ func TestParserExpression2(t *testing.T) {
 
 func TestParserFunctionCall(t *testing.T) {
 	got := getCompiled(t, "test/parser_func_call.asl")
-	want := "myFunc = {\r\na = _this select 0;\r\nb = _this select 1;\r\nreturn a>b;\r\n};\r\n[1+3/4, 2-(66*22)/3-((123))] call myFunc;\r\n"
+	want := "myFunc = {\r\nparams [\"a\",\"b\"];\r\nreturn a>b;\r\n};\r\n[1+3/4, 2-(66*22)/3-((123))] call myFunc;\r\n"
 
 	equal(t, got, want)
 }
@@ -139,6 +139,13 @@ func TestParserArray(t *testing.T) {
 	equal(t, got, want)
 }
 
+func TestParserFunctionParams(t *testing.T) {
+	got := getCompiled(t, "test/parser_func_params.asl")
+	want := "myFunc = {\r\nparams [[\"a\",1],[\"b\",2]];\r\nreturn a+b;\r\n};\r\n"
+
+	equal(t, got, want)
+}
+
 func getCompiled(t *testing.T, file string) string {
 	code, err := ioutil.ReadFile(file)
 
diff --git a/test/parser_func_params.asl b/test/parser_func_params.asl
new file mode 100644
index 0000000..352b44a
--- /dev/null
+++ b/test/parser_func_params.asl
@@ -0,0 +1,3 @@
+func myFunc(a = 1, b = 2) {
+    return a+b;
+}