Help with Test Bench for FPGA code

[AlexA]

Hey all

I'm currently trying to simulate a block of FPGA code which performs an FFT. I am having a lot of trouble getting the simulation to store the output of the FFT

Here's the FPGA code:

And here is where I seem to be having problems with the test bench:

I've verified that the input case works, i.e. the FPGA code produces a graph corresponding to the input code I'm providing to the test bench, but the output case doesn't seem to populate the FFT results global, and I can't figure out another way to look at the results of the FPGA code.

Any help would be much appreciated.

Regards

Alex