Hi @preetham,
please dont open multiple threads on the same topic. I Will close this thread. So please stick to the original one.
There you have a screenshot of how to setup the button trigger.
If that is not enough please try to precisely tell where you stuck.
This is a pretty basic question (how to change a variables value by a button trigger). Maybe you should have a look in the knowledge base or tulip university on the basic use of tulip.