Hi, I'm trying to write a for loop that includes an outfile. For example: For j=1 to N, ....., outfile = 'PATH:FILEj', ... As the j appears in a string, AIPS keeps writing out to "FILEj" rather than FILE1, FILE2, etc... Is there a way to get aips to understand the variable j inside the string? Thanks for you help! Kris