Set Focus on Form control in Ax 2012

To Set Focus on Form control in Ax 2012 you can take help from below code.

 Args args;  
 FormRun _formRun;  
 FormControl _formControl;  
 ;  
 args = new Args(formStr(CustTable));  
 _formRun = classFactory.formRunClass(args);  
 _formRun.run();  
 _formRun.detach();  
 _formControl = _formRun.design().controlName(identifierStr(Desc));  
 _formControl.setFocus();