$system() command in Verilog-A

Hi,

Is there any possibility that I can run $system() command in Verilog-A model. I want to an external script that computes some values and return it to my verilog-a parameter.
example:
S= $system("sh myfile.sh")

I check the documentation of virtuoso and Verilog-A but I couldn't found such command.
Any work around for it?

Regards