X64 MMap for x86 game

[Receiver]

trying to write x64 injector for x32 game
all struct contains 32 postfix
loader code part:

while (pIBR->VirtualAddress)
    {
        if (pIBR->SizeOfBlock >= sizeof(IMAGE_BASE_RELOCATION))
        {
            int count = (pIBR->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) / sizeof(WORD);
            PWORD list = (PWORD)(pIBR + 1);

            for (int i = 0; i < count; i++)
            {
                if (list[i])
                {
                    PDWORD ptr = (PDWORD)((LPBYTE)LoaderParams->ImageBase + (pIBR->VirtualAddress + (list[i] & 0xFFF)));
                    *ptr += delta;
                }
            }
        }

        pIBR = (PIMAGE_BASE_RELOCATION)((LPBYTE)pIBR + pIBR->SizeOfBlock);
    }

this shit crashes game
maybe this is due to the different sizes of the pointer?