Using the ITimer in abb

Hello, I wanted to ask about the use of the Itimer routine. I call the interrupt , but it never enters the trap routine , if someone can help me . Thank you


VAR intnum timeint;
    VAR bool variable;
    
    PROC main()
        IDelete timeint; 
        CONNECT timeint WITH test_adq;
         ITimer\Single, 5, timeint;
        
    ENDPROC
    
    TRAP test_adq
        IF (variable) THEN 
            Set salida1;
            variable:=false;
        Else
            reset salida1;
            variable :=true;
        ENDIF
     
    ENDtrap
ENDMODULE