tell me what is rong in this code!!

so i was tring to do pointer in c++ ive got stuck and my help is away somwhere so can some one help me.

byte newdata[]={0x00, 0x00, 0x00, 0x00};
DWORD newdatasize = sizeof(newdata);
int n;
ReadProcessMemory(hProcess, (LPCVOID)0x00896e28, &n, sizeof(n), 0);
int offset = 0x4C;
n += offset;
WriteProcessMemory(hProcess, &n , &newdata, newdatasize, NULL);

// That not returning the right thang
////////////////////////////

thank for your help
Boom

whats that code any i mean whats that do ??????? super jump or whatever???