Borland C++ BCB 5 - EAccessViolation DynamicArray Array too large

Question

I am using BCB 5 and I have a DynamicArray that works perfectly under normal conditions, but recently i have been forced to use it for a large dataset(About 7000 items) and my exception handler throws this EAccessViolation. This happens after:

try
{
    sz++;
    Recon.Length = (sz + 1);
}

And when i checked Recon.Length = 4606

I have increased the Heap Max Size to the maximum on the linker option but i still get this error.

Is there another way to increase the memory available to the application