lr_set_transaction () not working on LoadRunner 12

Hi Friends,

I am working on a script where I need to manually set a transaction with a transaction time (ping response), but I see that the function lr_set_transaction is not working on CVuser protocol in LoadRunner 12. Please let me know if the function is supported for LoadRunner 12?

the syntax I am using is as below:

lr_set_transaction("new",12.13,LR.PASS);

any help is greatly appreciated.