UE5 【AI behavior tree】I want to create a Random Select composite in the blueprint

1、But the blueprint cannot customize the composite。
2、I saw other articles using custom services to create this random feature, but after following the instructions, it cannot be used properly, Like this



3、Then I tried providing random numbers based on weights in other C++articles and executing corresponding tasks based on the random numbers


4、Unfortunately, this approach is also of no use. The result is the same as mentioned earlier, which may be due to an error in my service settings or Task’s Finish settings