Once a script has been evaluated, you can use the following ALH API to trace from where the script was called and access the Caller.
public NamedElement getCaller() {
...
}
It will return the Caller element of the script. For example, if a Behavior that runs a script is called from a callBehavior, you will get a callBehavior action as the Caller.
The following code fragment shows how to trace from where the script was called, e.g., from State1, through ALH API.
ALH.getCaller().getName(); // Trace from State1.