Hello there; The lattice beams you create with the truss command do not have the option to change only the cross section of a strut or diagonal. Currently, you have to change the cross-section of all the uprights. Or, if you enter the truss one by one using the beam, not the scissor command, you can make any changes you want. There are user requests regarding the situation you mentioned. Notes have been taken for consideration. Your limitation in our demo program is that you can't just print out reports and drawings. All the possibilities available in the program are also available in the demo. Good work.