Hi all,<br><br>Is it possible to output a different number of files based on variables that the use has chosen?  I have a program that will output different numbers of files based upon the input data.  So, for example, if the user wants to use a single-end fastq file, the program outputs only one file, however, if the user chooses paired-end fastq files, it outputs three files.  Is there any way to get that to work in just one tool?  I could make separate tools for single vs. paired end, but I&#39;d rather not.<br>
<br>- Nik. <br>