SendInput to kal won't work

Hey guys, I'm trying to figure out, how to send input to kalonline.
When I run this script, it works great if I open notepad. It will spam 33333...
But when I try it on kal, it just won't send any input.
I tried 0x04, but I figured it's either right click or middle click on mouse. Can't find codes for numbers to work in kal.

Any ideas?

Code:

#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */


#define WINVER 0x0500
#include <windows.h>
 
int main()
{
	int a=1;
    // This structure will be used to create the keyboard
    // input event.
    INPUT ip;
 
    // Pause for 5 seconds.
    
 do {
 Sleep(3000);
    // Set up a generic keyboard event.
    ip.type = INPUT_KEYBOARD;
    ip.ki.wScan = 0; // hardware scan code for key
    ip.ki.time = 0;
    ip.ki.dwExtraInfo = 0;
 
    // Press the "A" key
    ip.ki.wVk = 0x33; // virtual-key code for the "3" key
    ip.ki.dwFlags = 0; // 0 for key press
    SendInput(1, &ip, sizeof(INPUT));
 Sleep(500);
    // Release the "3" key
    ip.ki.dwFlags = KEYEVENTF_KEYUP; // KEYEVENTF_KEYUP for key release
    SendInput(1, &ip, sizeof(INPUT));
	a++;
	}
    while (a>0);
 	

    // Exit normally
    return 0;
}