Adding a new variable name and not selecting a method creates confusing messages

jirikadlec2[CodePlex]

I go to the page add_variable.php
In the variable name I select Other/New
I enter the new variable name and the new variable definition
I fill in all the other fields, but I don't select any method
I click the quotAdd Variablequot button
A validation error message appears: Please select a method.
When I select a method from the methods drop-down, I get another error message:
quotThe variable name already exists. please select a name from the list.quot
And, when I click OK, I get a message quotVariable successfully added.quot appears. So, Although I get the two error messages, the variable was still probably added to the database, but the two error messages are confusing for the user.

Suggestion:
Don't validate if the user selected the method when adding a new variable. In case the user doesn't select any method in the drop-down, set the method to 'no method specified'.

Why I have this suggestion:
When I'm adding a new variable, I haven't added the new method yet. And, when I'm adding a new method, i must select an existing variable associated with this method. Now it's not possible to add a new method and a new variable at the same time!

Start with the add_variable.php flow described in the issue and reproduce adding a new variable with Other/New selected and no method. Trace the validation and success-message behavior, then verify that omitting a method no longer produces the misleading errors and that the variable is still added with “no method specified”.

Written by the indexing model from the issue text.