Hi,
please go to this field->Advanced->Actionscript->check Custom->check Change and put:
function ff_nameofelement_action(element, action)
{
switch (action) {
case 'change':
var test=Number(ff_getElementByName('nameofelement').value);
ff_getElementByName('nameofelement').value=test.toLocaleString('de-DE', {
minimumFractionDigits: 0,
maximumFractionDigits: 0
});
break;
default:;
} // switch
} // ff_nameofelement_action
Please replace nameofelement with name of that element (not title)
Regards,
Tihana