Hei George, Thanks a mil for your quick reply. This helped me very much. A number of mistakes occurred because I shortened the functions so that it was easier to read for you. BUT you found the error!! When i call the seconday function <xsl:sequence select="xsfarrays:get_cities_arra y" /> ...

I created a function that analyzes an inputstring ($inputdata) and checks if a number of strings are in the text. It returns an an array of matching strings. The strings to search are in a variable which is a document node with <root> a root node an <regex> as child nodes. I want to create a functio...