First, let's add the event option. After clicking enter, let's select the "Biological" option, and then find "Biological Defeat" on the left. After the selection is completed, we can return to the interface where the trigger is created. After completing the above operations, we can set the operation of the "Event" option.

Next, we will add the condition option. Click to enter, then select "Bio", and then find "Bio-type Judgment" on the left to return to the interface for creating triggers. Let's click the trigger we just created. After clicking in, we will see the "biological type" in red font. After clicking in, just randomly select the monster or animal you want to hit. Stupid children here use scarecrow to give you an example.

Return to the trigger creation interface. After returning, we will create a "condition" option again. After clicking Enter, we will first select "Mathematics" and then find "Random Number" on the left. After selection, we will return to the trigger creation interface. Back to the operation interface, we click the trigger condition 2 just created. After clicking on it, we first see the "random number" in the green font in the first column. 1 this number is filled in with a certain number, which indicates how likely we are to get the falling object. For example, setting 1 to 100 means that there is a one percent probability.

After completing the above settings, click "Value" in red font in the third column. We can choose to enter a number, which means that random numbers will drop objects. When we are finished, we will return to the trigger creation interface and add the option setting of "Action". After clicking the action, we will first select "props" and then find "create falling objects" on the left. When finished, we will return to the trigger creation interface. We will click on the "Prop Type" in red font in the third column and select the monster or item we want to make.