[Info-gnuprologjava] GNUProlog problem

[Juan DYB]

Hello:

I'm using GNU Prolog for Java and i have a problem with a simple predicate.

I have a predicate like this in prolog.

iniciarTablero:-

assert(tablero([[0,0,0],[0,0,0],[0,0,0]])).

And i'm trying to execute it With GNUProlog with this code.

Environment environment = new Environment();

environment.ensureLoaded(AtomTerm.get(filePl));

interpreter = environment.createInterpreter();

environment.runInitialization(interpreter); 

this.iniciarTablero();

interpreter.runOnce(AtomTerm.get("iniciarTablero()"));

And i get this error.

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: The goal is not currently active

at gnu.prolog.vm.Interpreter.stop(Interpreter.java:564)

at gnu.prolog.vm.Interpreter.runOnce(Interpreter.java:629)

….

Can you help me please ?

Thanks!

--
With regards,

Juan