Host-FPGA communication

Hi All,

I'm trying to send data from a host VI to a FPGA VI. I know this can be done trough front panel controls, but I ran out of terminals.

So I decided to group items into array controls but now the code won't compile. I started reading about FPGA's and arrays and found out, this is not the way to go. I think I need to use a FIFO to transfer the data to the FPGA (correct me if I'm wrong). So I started this way, but can't get it to work. 

On the FPGA I have a VI to toggle 20 FPGA outputs (PWM) but I want to set the frequency in the Host VI. How can I get the frequency's out of this FIFO and wire each frequency to its corresponding output? How is this done?

Any suggestions? 

Thanks!