Mine

void UTIL_HudMessage( int EntIdx, const hudtextparms_t &textparms, const char *pMessage )
{
	int MsgIdx = UserMessageIndex("HudMsg");
	MRecipientFilter mrf;
	mrf.AddPlayer(EntIdx);

	bf_write *bf;
	bf = m_Engine->UserMessageBegin( &mrf, MsgIdx );
		bf->WriteByte ( textparms.channel & 0xFF );
		bf->WriteFloat( textparms.x );
		bf->WriteFloat( textparms.y );
		bf->WriteByte( textparms.r1 );
		bf->WriteByte( textparms.g1 );
		bf->WriteByte( textparms.b1 );
		bf->WriteByte( textparms.a1 );
		bf->WriteByte( textparms.r2 );
		bf->WriteByte( textparms.g2 );
		bf->WriteByte( textparms.b2 );
		bf->WriteByte( textparms.a2 );
		bf->WriteByte( textparms.effect );
		bf->WriteFloat( textparms.fadeinTime );
		bf->WriteFloat( textparms.fadeoutTime );
		bf->WriteFloat( textparms.holdTime );
		bf->WriteFloat( textparms.fxTime );
		bf->WriteString( pMessage );
	m_Engine->MessageEnd();
}

// lookup index for user messages
int UserMessageIndex(const char *messageName)
{
   char name[128] = "";
   int sizereturn = 0;
   bool boolrtn = false;
   for(int x=1; x<27; x++)
   {
      boolrtn =  m_ServerDll->GetUserMessageInfo(x, name, 128, sizereturn); 
      if(name && strcmp(messageName, name) == 0)
      {
         return x;     
      }
   }
   return -1;
}