Hi everyone, when I use the scripts in command line, there is no mistakes a=[1,2] delvar,a but when I use it like: (test.pro) pro test a=[1,2] delvar,a end it doesn't work: mistakes are: % Identifiers can only be added or deleted at the main level: A. % Execution halted at: SY                  4 c:/program/sy.pro %                      $MAIN$      Thanks in advance.