@jen the odd thing is that the parameter field type is integer number! how were you able to fix your issue? by changing the field type?

Set the value using a string. If your variable is a number, do this

var value = 12345;
rec.setValue({ fieldId: 'your_integer_field', value: 12345.toFixed(0) });

Honestly can’t remember now, I might have used

toString()

or just

+ ''

or something.