@Anudeep_Garnepudi Thank you so much! It works, you saved my time 

Hey @Kishore_Kumar_! Thank you for detailed explanation.Unfortunately I need either "Bonus Id" or "Promocode". It depends on content manager choice during the page creation - my existed script just blocks another input if any of these both is filled in. Hence, could you say - is it a way to add my s...

Hi @Sanjay_Bangar , Yes, I am using the extraClientlibs property, you can see it in my screenshot 2, but this property only works when I created a new page and want to change it, and when I create it it doesn't work.

Hi @Sanjay_Bangar ,  Your link does not work for me, could you please check it. Could you please explain in more detail where the client library for all dialogs is loaded and the category property of your client library is set to cq.authoring.dialog. Thanks,Alex.

I created a custom script for input validation which checks if another input has value and if ithas the current input should be disabled.This behavior is validated by external script that'sconnected through "extraClientlibs" property in "jcr:root" of the current template "_cq_dialog"content. And the...