ttsBegin and ttsCommit in MSD axapta

You can use ttsbegin and ttscommit with ttsabort following way. You can try in job

 public boolean myMethod()  
 {  
 try  
 {  
 ttsBegin;  
 select forUpdate myTable;  
 myTable.fname = testt_;  
 myTable.update();  
 ttsCommit;  
 }  
 catch(exception::Error)  
 {  
 ttsabort;  
 return(false);  
 }  
 return(true);  
 }