API to update vendor name for employee supplier type

Hi,

Need to know API to update the vendor name for employee supplier type ??????

Tried with below script but wont works.

DECLARE

  lc_return_status  VARCHAR2(2000);

  ln_msg_count      NUMBER;

  ll_msg_data       LONG;

  Ln_Vendor_Id      NUMBER;

  Ln_Vendor_site_Id NUMBER;

  ln_message_int    NUMBER;

  Ln_Party_Id       NUMBER;

  lrec_vendor_rec   ap_vendor_pub_pkg.r_vendor_rec_type;

BEGIN

  -- Initialize apps session

   Fnd_Global.apps_initialize(1130, 21708, 515);

  mo_global.set_policy_context('S', 82);

  mo_global.init('SQLAP');

  Ln_Vendor_Id                          := 17033;

  Lrec_Vendor_Rec.vendor_name := 'XXXXXXXX';

  Lrec_Vendor_Rec.employee_id := 3829;

  ap_vendor_pub_pkg.update_vendor_public(p_api_version   => 1,