Dear all, I have a working module which generates wig files for genomic annotation from a single column of a bigger input data matrix (Input A). In the current state, the user has to input the column name (Input B) from which to calculate the values in the wig file. Now I'd like to modify the xml in such a way, that depending on the input dataset (Input A) a dynamic list for Input B is generated. I found Hans-Rudolf Hotz' hints from some time ago on this list and thought that the following would be a good start: <param name = "InputB" label = "InputBName" format = "data" type = "select" help = "Use tickboxes to select model" display = "radio" dynamic_options = "getInputBOptions($InputA)" /> <code file="getInputBOptionsFromInputA.py"> getInputBOptionsFromInputA.py contains a single function def getInputBOptions($InputA): ## parse Input A ## create list InputBOptions return(InputBOptions) Using this approach I get an invalid syntax message when trying to even open the module - in any case I have the feeling that something is still missing here. Did anybody solve a similar problem already and could give me a hint on how to solve that? Cheers, Holger -- Dr. Holger Klein Core Facility Bioinformatics Institute of Molecular Biology gGmbH (IMB) http://www.imb-mainz.de/ Tel: +49(6131) 39 21511