Display Buysiness rule will work only on Form load. REST based connection will never reach to the form. I suggest you to embade the Business rule code as a response to web service response
Hello,are you talking about "Background Script" ? If yest than you need to elevate your privilege to have security role and than you can find the moduleelse you can type ctrl+shift+alt + J which gives you client side popup to run the code
Hello,You may also try Query Business rule on the choice table but you have to be very careful while writing that.I would suggest you can use g_form.ClearOption or g_form.removeOption or g_form.addOption
