VPWLF source in Cadence Virtuoso

Hi,

I want to give a voltage ramp signal for a circuit. I am using Vpwlf instant available in analogLib.

This works fine if i have same file for all the corners.

But I want to run the simulation at different corners and a specific voltage ramp file for that respective corner, meaning for each corner the file is different.

How can i define the file path in vpwlf as a VARIABLE and then define complete file name in corner setup window????

Regards,

Jagdish