Auto Fill two fields depending on text in another field

Working with Adobe Acrobat Pro DC

I am trying to fill two other text fields with different information depending on what is entered into a third text field.  Here is the script I put together, but it is not working.  I have tried to set it to Select Trigger: Mouse Up and Mouse Enter also.  Any suggestions?

var v = event.target.value;

var f4 = this.getField("Days available");

var f5 = this.getField("Pay Level");

if (v != "1") {

    f4.value = "3";

  f5.value = "1";

}

else if (v != "2") {

    f4.value = "4";

  f5.value = "1";

}

else if (v != "3") {

    f4.value = "5";

  f5.value = "2";

}

else if (v != "4") {

    f4.value = "6";

  f5.value = "3";