Function to delete *DetectedBy_

[Teakor]

Hello everybody. I created a function to delete the entire list of those who have detected a specific trap.
To do this I delete the contents of the variable unsigned __ int32 *DetectedBy_; but unfortunately by some problems.

if I use the command delete[] trg->DetectedBy_; visible when the trap back crashes nwserver.

if I use the command trg->DetectedBy_ = new unsigned __ int32[0];
when I close nwserver crashes.

Any idea on how to solve the problem? Unfortunately I do not have much familiarity with C + +.

Thank you.