ups sorry that was a typo. Yes Get is the right format. Regarding the syntaxerror your code probably is fine, the validator can’t understand this new type of validations yet (sorry for that) and that is why it is throwing that error. I am in the process of improving the validator so it can understand this and other more complex validations.
Regarding “I wouldn’t know how to exclude a specific date from these instructions. like August 2, 2018 for example”. You just need to add that date in your validation.
For example, if you want to not allow mondays and that particular date you will need a validation like this:
$$field_rnField9$$.GetDayOfWeek()==1 || $$field_rnField9$$==’2018-08-02′
In this validation if the user select any monday or August 2, 2018 the form will show an ‘Invalid Date’ message.
In case you want you can download a form that use this example here: https://send.firefox.com/download/77abaab42f/#5aHj75Aj0kpgO8v-WmOTBQ
Regards!