C++: issues with heap an functions, the gist

void manage_Rectangle_arr(string, Rectangle * *, short*);

int main()
{
    Rectangle * * arr;
    short siArrayL=1;

    manage_Rectangle_arr("make array", arr, &siArrayL);
    manage_Rectangle_arr("fill array", arr, &siArrayL); //Problem here
    manage_Rectangle_arr("get areas", arr, &siArrayL); //Problem here
    manage_Rectangle_arr("empty contents", arr, &siArrayL); //Problem here
    manage_Rectangle_arr("delete array", arr, &siArrayL);
}

void manage_Rectangle_arr(string strCommand, Rectangle * *arr, short *siArrayL)
{
    if(strCommand=="make array")
    arr = new Rectangle * [ *siArrayL];

    if(strCommand=="fill array") //Problem here
    for(short s=0; s< *siArrayL; ++s)
    arr[s]= new Rectangle(1, 1);

    if(strCommand=="get areas") //Problem here
    for(short s=0; s< *siArrayL; ++s)
    cout << arr[s]->getArea();

    if(strCommand=="empty contents") //Problem here
    for(short s=0; s< *siArrayL; ++s)
    delete arr[s];

    if(strCommand=="delete array")
    delete [] arr;
}

//When I call manage_Rectangle_arr(string strCommand, Rectangle * *arr, short *siArrayL) with any of the following: "fill array", "get areas" and "empty contents" (obviously the last two are related to "fill array" in nature, since they need it to be executed first in order to function)