Here is one possibility which moves the later part of your script to another module so it can be more easily used within the scope of the if(). module coaster(element){ if (element=="Hydrogen") rest_of_coaster(1,"Hydrogen","H",1.008); else if (element=="Helium") rest_of_coaster(2,"Helium", "He",4.003); } module rest_of_coaster(atomic_number,element,symbol,atomic_mass){ // do whatever } A different approach is this element_data = [[0,"","",0], // must be in order [1,"Hydrogen","H",1.008], // indexed via atomic number [2,"Helium", "He",4.003] // redundant atomic number to preserve your sanity later ]; Hydrogen = 1; Helium = 2; module coaster(atomic_number){ element = element_data[atomic_number][0]; symbol = element_data[atomic_number][1]; atomic_mass= element_data[atomic_number][2]; //rest of script } -- View this message in context: http://forum.openscad.org/Using-a-single-parameter-to-set-multiple-variables-tp14102p14103.html Sent from the OpenSCAD mailing list archive at Nabble.com.