Hi, I'm using iReport 4.5.0 Community Edition with language set to Groovy and have trouble defining a parameter. The basic thing is that I want to build a default option 'All values' into a parameter and cannot find a way to do it. I have a field HospitalType with values 1 (Central), 2 (Region) and 3 (Local) and some missing values. I want to have a parameter with the options Central, Region, Local and a default value All that includes all three levels. In the last case I'm asking for a range of values and that's where the problem begins. I tried using some tips I found on technical blogs and here but I'm not getting any further. In my Report SQL query I included WHERE $X{IN, HospitalType, TypeParameter} For my parameter TypeParameter I tried Parameter Class: java.util.List and Default Value Expression: java.util.Arrays.asList(NULL,1,2,3) but then I get an error when reading the fields in the Report query: Error in method invocation: Static method asList(null,int,int,int) not found in class 'java.util.Arrays' Is this the right way to do it, where is the problem? Many thanks in advance for any help and suggestions.