Hello everyone, I'm trying to use the APESolver using a time-dependent series of files for my baseflow and my source terms. I'm having difficulty in figuring out the regex that's used to specify the format of these file names. From the tutorial the file names are specified in the .xml file as thus: APEzzz_%14.8E.pts while the actual filename this points to is : APEzzz_1.00000000E-05.pts and so on. I can't quite decipher the regex. Observation tells me that the 14 refers to the total number of characters after the underscore and 8 is the number of zeros between the decimal point and the E. However, since my input .pts file come directly from a simulation it would be easier for me if I could provide the regex to the .xml file to access filenames of the form APEzzz_1401.pts, APEzzz_1402.pts and so on. I have tried APEzzzz_%4.pts as an input but this returns an error. I'd be grateful for some further guidance in this regard. Sincerely, -- *Amitvikram Dutta* Graduate Research Assistant Fluid Mechanics Research Lab Multi-Physics Interaction Lab University of Waterloo