Does anyone know if a field can populate a result of PASS/FAIL/COMPLIANT based on a GREATER THAN or LESS THAN number?

I'm doing something similar to OP, but I need to return a value of "True" or "False" if the field containing the number is less than or equal to a value in another field. How do I make this syntactically correct, where Y is the second field?

event.value = (this.getField("X").value <= Y)?"True":"False";