I am trying to write code to access some of the KEGG API functions that are not available in KEGGSOAP using SSOAP. I have figured out how to access the basic KEGG API functions such as list_organisms, list_pathways, etc. I believe I have a problem when the function expects the input in the form of a SSOAP object like an ArrayofInt or ArrayofStrings. For instance, when I run the code that should call mark_objects_by_pathways I get an error regarding the element_id_list object along the lines of can't use string as an array ref when strict refs is in place. I assume this is because the input variable is the wrong class or I need extra handling to convert the input into the correct class. I can't get under the hood of the KEGGSOAP function to see how they deal with this problem because I don't know hwo to access KEGGaction, or KEGG name spcaes defined in .first.lib. My real goal is to define the KEGG elements according to which genes are associated with each element and then color the pathway by the expression values of the genes in each element. I run into this problem when I try to color by elements. Thanks, Mike Gormley [[alternative HTML version deleted]]