Second RegisterHotKey supercedes previously declared one?

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C++

Why oh why.

I have a message only window that I have assigned a hotkey Win + S to.
This has worked well.

I wished to add a Win + A hot key so I thought I could just register another one.

The following code works with Win+S but if I uncomment the Win+A Registerhotkey then
msg.message == WM_HOTKEY is never true when Win+S is pressed but is true if Win+A is pressed.

As if I cannot have two hotkeys assigned to this message window? Bah. - Can't be.

int WinS;
int WinA;

RegisterHotKey(hWnd,WinS, MOD_WIN, 'S');
// RegisterHotKey(hWnd,WinA, MOD_WIN, 'A');

Window message loop

void message_loop()
{

        MSG msg = {0};

        while (GetMessage(&msg, NULL, 0, 0))
        {
	    if(msg.message == WM_HOTKEY)
	    {
		if(msg.lParam == 0x00410008)
		{
	        	AfxMessageBox("Win+A");
		}
		if(msg.lParam == 0x00530008)
		{
		        AfxMessageBox("Win+S");
		}
            }
            TranslateMessage(&msg);
            DispatchMessage(&msg);
       }
}