Client Script newValue not working

[servicetrout]

The following client script on a service form, which is active, Global, not Inherited, of type OnChange, Table = correct table, and Field Name = correct field name and the form field currently has the following value "20%"   shows the following in the alert ... regardless of what a user enters into the field, such as "30%", "15%", "5%", 10,15,30.

newValue: 20%  Old: 20%       (everytime).

Any ideas on what might be going on would be greatly appreciated. 

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
if (isLoading ) {
return;
}
   alert ("newValue: " + newValue + " Old: " + oldValue);      //  Always displays the same value that is in the field?!

}

Thank you in advance. 

- G

In fact if I change it to this: 

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
if (isLoading ) {
return;
}
alert ("newValue: " + newValue + " Old: " + oldValue); // Totally not working !!
var inVal = g_form.getValue('u_pdepttax');
alert ("inVal: " + inVal);

}

The second alert displays the original value and not the one I enter into the field on the form, as well. 

Thus, second alert displays "20%" when 30 is entered into the field?  Odd.  Everything else on the form works as expected - FWIW.

[ggg]

what data type is the field in question?

[ggg]

works fine with a string.

[servicetrout]

Field type is string.  No, it is not working as expected.

[ggg]

i have a field on my record, 'name', type string.

when i open the record value is 20%.

i change it to 30%.

the alert ("newValue: " + newValue + " Old: " + oldValue) displays the value as expected.

newValue: 30%  Old: 20%