Use commitKey to change value in next field

Question

if (event.commitKey == 3){myTrustedFunction(this);} So I want to run this function on a specific field after tab is used in this field. Instead of this I would like to use
var school=doc.getField("SCHOOL NAME");How can I run this function on this specific field. The tab is going to this field also. So it goes like this enter value tab value for next field is automatically entered. Bam.Tab to next field.

Answer 1

JavaScript™ for Acrobat® API Reference
if ((event.value.length<5)&&(event.value.length>3)){
                event.value=("0"+event.value.toString());
            if ((event.value.length<4)&&(event.value.length>2)){
                var num=event.value=("00"+event.value.toString());
            if((event.value.length<3)&&(event.value.length>1)){
                var num=event.value=("000"+event.value.toString());
             if(event.value.length<2){
                var num=event.value=("0000"+event.value.toString());
if (event.commitKey == 3){myTrustedFunction(this);getField("SCHOOL NAME").value = event.value;app.alert(num);}
else{app.alert("poop");}
so this crazy thing is just like a puzzle you get one thing to work and you break another. So I now have the field that I want with the correct data in that field. But in doing so i have recked the first field. They both now share the same data. I would like to put it back and give it the data of var num. But I do not know how. Because. getField("SCHOOL NAME").value =num does not work.