Runtime Assignments

Hi,

I want to apply some delays to a parameter/variable/constant in an assign statement of a design. These values are read from a file or passed as argument which are fixed at the start of runtime only once during the simulation.

I have gone through about specparam, but it is done at elaboration time. But I do not want to compile and elaborate every time as it is taking lot of time.

Is there any best way to do this?

Thanks,
Anudeep