UserForm Option Button Help...

Hello Every One!

I really need your help guys..I need code for the attach User Form...Please Help.

In the attach User Form ...I want when option button is select to "Yes" then it should add "Text Box 1 Value" and "Text Box 2 Value" and show the total sum in "Text Box 3".

For Example: If "Text Box 1" has value to "200" and " Text box 2 " has a value of " 300" then If option Button is Select to "Yes"...
It should add " Text Box 1 & Text Box 2 " and show " 500 " in " Text Box 3 ".

If option button is select to " No "...then it should only show " Text Box 1 value " In " Text Box 3 "....Do not add " Text Box 2 "

For example: In this case it should only show " 200 " in
" Text Box 3".


Please Help! I would be very thankful to you.

This should work!