my project is about making a computerized payroll procedure. i am currently making it using microsoft access. now, i want to create an enabled property in a form where a field label: [Regular] is set in Yes/No: yes, for regular employees; no, for sub contractual workers. the data is stored using a different form. in this form(separate form) i have right now, it automatically fills that field and it works the way i want it. some field depends on whether an employee is a regular or not. if he's regular, you need to put his regular rate. if not, just leave it unfilled. but to help my user not to commit mistake in input, i want set the enabled to "no" then when a form field [Regular] is set to "yes" for an input of a regular employee, it will enable the field. how can i do that? i tried validation rule but it makes error.