Logarithm calculation

Hi all,

I am using the following command to calculate the log of a numeric channel:

Call Calculate ("Ch(""Group2/Result"")= Lg (Ch(""Group1/Input""))")

I need to do this calculaiton for all my 20 channels. My quesiton is, is it possible to specify a variable name instead of Group2/Result and Group1/Input, say "P" & Counter where counter is from 1 to 20?

Regards,

Josef