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NetSuite Professionals

Hello All,
I am using SCS i.e SuiteCommerce Standard, In One of my SCS extension I need to use *"*Backend *Application.on('before:LiveOrder.addLines')* event*",* Do NetSuite Recommend to use this event? Is it good Idea to use in Custom Extension? Need input on this.
Below is the code sample
```Application.on('before:LiveOrder.addLines', function (line){
		ModelsInit.context.setSessionObject('isApiCalled', true);
	});```

It’s not officially approved but it’s pretty stable