Multiple attributes

Hello!

I'm currently working on adding some additional attributes to Unity to display messages when I need to. The messages work nicely, and I'm able to display the original property as it's supposed to be below the message. So for example, this: However, it always shows the property as it would be by default, and doesn't seem to support multiple attributes. Take the below example... Here, I have two properties, both have the slider attribute, but only the one without a message works - the other has defaulted back to being a regular integer box! Here is my code of the properties...

     [SerializeField]
     [Error("This is an error message")]
     private Camera cam = null; 


     // Movement speed
     [SerializeField]
     [Range(10f, 200f, order = 0)]
     [Warning("This is a warning message", order = 1)] 
     private float rotationSpeed = 60f;

     [SerializeField]
     [Range(10f, 200f)]
     private float zoomSpeed = 100f;

I'm using the optional order attribute because I thought if it drew the scroller first it may work, but nope. And here is my code for the property drawer...

 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
 {
             
     // Begin
     EditorGUI.BeginProperty(position, label, property);
     // Add message
     position.height = GetPropertyHeight(property, label) / NUM_ROWS;
     MessageAttribute attr = attribute as MessageAttribute;
     EditorGUI.HelpBox(position, attr.text, attr.messageType);
     // Add original editor contents
     position.y = position.y + GetPropertyHeight(property, label) / NUM_ROWS;
     GUIContent newLabel = new GUIContent("");
     GUIContent[] subLabels = { newLabel };
     EditorGUI.MultiPropertyField(position, subLabels, property, label);
     // End
     EditorGUI.EndProperty();
             
 }

I'm using MultiPropertyField as that's the simplest way I found of recreating the original inspector element. I'd really like for it to become a slider, any help is much appreciated!