Teoman

I am new to Macro Express, and maybe my question has a very "naive" nature. I have a template text file "temp.txt" and want to parse a specific string, let say "writeme", to specific rows of the "temp.txt" file, say "10,20,30" I set the string variable "T1" to "writeme". But I could not find a way to parse T1 value to those rows. Is there any suggestion for that ? Thanks Teoman