@jkabot Thanks, I was trying that, but my mistake was that I was trying to update display on the context.newRecord not the form. Is there a way to get the value on the form though before it actually loads, because getvalue on the field is coming back blank in the

before load

, Because I only wan't to disable it if a certain value is present in one of the other fields

Unless it's being set after that user event executes, (e.g. in a later user event or in a client script), you should be able to get the value from ctx.newRecord.getValue({ ... })