diff --git a/src/lib.rs b/src/lib.rs
index 21daa45..726b2dd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -925,3 +925,48 @@ impl MessageBehavior for VmcExtLight {
         });
     }
 }
+
+struct VmcExtVrm {
+    path: String,
+    title: String,
+    hash: Option<String>,
+}
+
+impl MessageBehavior for VmcExtVrm {
+    fn to_osc_message(&self) -> OscMessage {
+        let mut args = vec![
+            OscType::from(self.path.to_owned()),
+            OscType::from(self.title.to_owned()),
+        ];
+        if self.hash.is_some() {
+            args.push(OscType::from(self.hash.clone().unwrap()));
+        }
+        return OscMessage {
+            addr: String::from("/Vmc/Ext/VRM"),
+            args,
+        };
+    }
+    fn from_osc_message(msg: OscMessage) -> Result<Self, String> {
+        if msg.args.len() < 2 || msg.args.len() > 3 {
+            return Err(String::from("arg count invalid"));
+        }
+        let path: String;
+        let title: String;
+        let mut hash: Option<String> = None;
+        match &msg.args[0] {
+            OscType::String(s) => path = s.to_owned(),
+            _ => return Err(String::from("arg type invalid")),
+        }
+        match &msg.args[1] {
+            OscType::String(s) => title = s.to_owned(),
+            _ => return Err(String::from("arg type invalid")),
+        }
+        if msg.args.len() == 3 {
+            match &msg.args[2] {
+                OscType::String(s) => hash = Some(s.to_owned()),
+                _ => return Err(String::from("arg type invalid")),
+            }
+        }
+        return Ok(VmcExtVrm { path, title, hash });
+    }
+}