After Inserting a new variable in template

I have more than 2000 projects and now in template i put a combobox which is attached by a variable.

From now onwards everything is coming correct .

Can i fill this field in previous projects also? I not want to fill this field one by one.Can it be possible by some excel sheet or some database updation method?

If yes then please guide

Thanks

Ajay Baranwal

SolidworksSolidworks Pdm enterprise Pdm