Script always takes first condition

Content

Hi, 
  
In Before Update when I use the below code always the first conditoin only executes  
  
  
condition1 ; 
  
if (isAttributeChanged('EstimatedTotal_c') && (EstimatedTotal_c <50000)) 
{ 
  throw new oracle.jbo.ValidationException('VAT') 
  WorkflowFlag_c = 'PPB_DS_L50K_16' 
   
} 
  
condition 2; 
  
if ((isAttributeChanged('EstimatedTotal_c') && (EstimatedTotal_c <50000)) 
  && (isAttributeChanged('DataAccessBySupplier_c') && (DataAccessBySupplier_c =='Y'))) 
{ 
  throw new oracle.jbo.ValidationException('TECH') 
  WorkflowFlag_c = 'PPB_DS_L50K_146' 
}