diff --git a/src/lang.zig b/src/lang.zig
index 10df1be..1a747b9 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -151,15 +151,17 @@ pub const NewCommand = struct {
 
     pub const Amp = struct {
         pub const base_tag = Tag.amp;
-        pub const base_type = Type.lv2_command;
         base: NewCommand,
+        split: usize,
+        index: usize,
         gain: f32
     };
 
     pub const RFlanger = struct {
         pub const base_tag = Tag.rflanger;
-        pub const base_type = Type.lv2_command;
         base: NewCommand,
+        split: usize,
+        index: usize,
         delay_depth_avg: f32,
         law_freq: f32,
     };