public void set(String l_value) {
        this.value = (this.bitLength-l_value.length()>0) ? String.format("%0" + (this.bitLength-l_value.length())+ "d", 0) + l_value: l_value.substring(l_value.length()-bitLength, l_value.length()) ;
      
        if (this.visible)  showRadioBoxes();
       
    }