The line capture screen will not work, because the capture command cannot evaluate an expression. Save the value of screen to a variable, then use the variable with the capture command.
Also, the value of screen is set after calling checkahop, but you are calling screen before checkahop. Remember that expressions are evaluated from end to front, which is the reverse of reverse polish notation, or just polish notation. So, your code should look like this:
verify checkahop #from #to -1 1 or checkahop #from #to 0 1;
verify islower screen;
set scrn screen;
capture #scrn;
The line
capture screenwill not work, because thecapturecommand cannot evaluate an expression. Save the value ofscreento a variable, then use the variable with thecapturecommand.Also, the value of
screenis set after callingcheckahop, but you are callingscreenbeforecheckahop. Remember that expressions are evaluated from end to front, which is the reverse of reverse polish notation, or just polish notation. So, your code should look like this: