Multiple Instances of Vsource with Different File Variable

Hi,

I need to have over 400 instances of vsource as a pwl in my design with the input to the pwl specified as a csv file. I want to pass the csv file as variable for each instance with variable names like var1, var2, var3 and so on. My question is, is there a way to create multiple instance of vsource at once wherein the file name for instance is automatically incremented as var1, var2 as I keep placing the instances? Going over each instance & typing out the variable name is a lot time consuming. 

Thanks in advance.