i found some information , since i am working in scoped application that is the reason i am not able to get any output while using getXMLWait.

getXMLWait not works in scoped application it only works in global appication, now i need to find that how can i pause my form for 3 secs when any value is selected from category.

can i use setTimeout(function()) here.

Now what i want is when i select any category than my form should get hang for 3 secs, and after that only i should able to choose topic.