~아/어서는 안되다 & ~(으)면 안되다
what's the diffrence between ~아/어서는 안되다 & ~(으)면 안되다 ?
is it correct to use them in any situation ?
• 이렇게 하면 안돼요 = you shouldn't do it this way
• 이렇게 해서는 안돼요 = you shouldn't do it this way

-Thanks-

Question

~아/어서는 안되다 & ~(으)면 안되다
what's the diffrence between ~아/어서는 안되다 & ~(으)면 안되다 ? 
is it correct to use them in any situation ?
• 이렇게 하면 안돼요 = you shouldn't do it this way 
• 이렇게 해서는 안돼요 =  you shouldn't do it this way

-Thanks-

Answer

~하면 안된다. not permitted to do some action.
~해서는 안된다.  fail because of doing some action.(expecting doing another action)