Is there a way to handle files with underscore? Like data_nk123.txt Since the underscore is used for the columns of a worksheet after import of multiple data fdlog.get(A,i) open -w %A; ...do some more with worksheet %A; the worksheet name will be set to "datank123" but the variable %A is still "data_nk123" OK, 1. I can do some rogramming to adjust %A and extract the underscore in the name if there is any. 2. I also could rename all the data files. This would cause other complications. But maybe there is another easier way to get around this? Thanks, Tilman.