TLN_SetSpritePivot with C# Binding

[Midnight Syntax]

I wanted to move the pivots of my sprites around but I noticed that that C# binding didn't have the function implemented, I didn't think much of it and added it myself. For reference I put it in the Sprite struct and added it according to how you've implemented everything else. However when trying to call it I get: 

---

System.EntryPointNotFoundException: 'Unable to find an entry point named 'TLN_SetSpritePivot' in DLL 'Tilengine'.'

---

Is there a reason as to why the function isn't in the binding?

Here's the code I added for reference:

Code:

[DllImport("Tilengine")]
       [return: MarshalAs(UnmanagedType.I1)]
       private static extern bool TLN_SetSpritePivot(int nsprite, float px, float py);
.
.
.
.
.
/// <summary>
       ///
       /// </summary>
       /// <param name="nsprite"></param>
       /// <param name="px"></param>
       /// <param name="py"></param>
       public void SetPivot(int nsprite, float px, float py) {
           bool ok = TLN_SetSpritePivot(nsprite, px, py);
           Engine.ThrowException(ok);
       }