diff --git a/src/frames/mod.rs b/src/frames/mod.rs
index 2270abf..1d40abc 100644
--- a/src/frames/mod.rs
+++ b/src/frames/mod.rs
@@ -134,7 +134,7 @@ pub fn parse_frame(data: &[u8])  -> Result<FrameType, FrameError> {
                 _ => Ok(FrameType::LongFrame{
                     function: Function::from(data[4])?,
                     address: Address::from(data[5]),
-                    data: &data[7..data.len() - 2],
+                    data: &data[6..data.len() - 2],
                 }),
             }
         },
diff --git a/src/lib.rs b/src/lib.rs
index 019d9f9..961f8ba 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,5 +2,12 @@ mod frames;
 mod user_data;
 
 pub fn parse_frame(data: &[u8]) -> Result<frames::FrameType, frames::FrameError> {
-    frames::parse_frame(data)
+    let frame = frames::parse_frame(data);
+
+    if let Ok(frames::FrameType::LongFrame{function, address, data}) = &frame {
+        let user_data = user_data::parse_user_data(data);
+        println!("Function: {:?}, Address: {:?}, User Data: {:?}", function, address, user_data);
+    }
+
+    frame
 }
diff --git a/src/user_data/mod.rs b/src/user_data/mod.rs
index 6b9f76f..3a8be29 100644
--- a/src/user_data/mod.rs
+++ b/src/user_data/mod.rs
@@ -131,7 +131,7 @@ impl std::fmt::Display for IdentificationNumberError {
 impl std::error::Error for IdentificationNumberError {}
 
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, PartialEq)]
 pub struct IdentificationNumber {
     number: u32,
 }
@@ -155,6 +155,7 @@ impl IdentificationNumber {
 }
 
 
+#[derive(Debug, PartialEq)]
 pub enum UserDataBlock {
     ResetAtApplicationLevel{subcode: ApplicationResetSubcode},
     FixedDataStructure{
@@ -172,7 +173,7 @@ pub enum UserDataError {
     InvalidUserData,
 }
 
-fn parse_user_data(data: &[u8]) -> Result<UserDataBlock, ApplicationLayerError> {
+pub fn parse_user_data(data: &[u8]) -> Result<UserDataBlock, ApplicationLayerError> {
     
     let control_information = ControlInformation::from(data[0])?;