Gamemaker Day 18

Today I learned a new function and writing a script, The function "array_length_1d(array)" it could represent a group of variables.
what i did : I made a script that control the action when I press the button enter, also when my arrow point at start , which mean the action would be on "case 0" in my script.

The next day I'm going to do whenever my character shot all of the enemy , the game will switch room