Dynamic select menu drop-down

We have a drop-down list that users select their industry.
The question arises when they change their industry that it will default the first condition in the list and not what they initially selected.
Hope that it is, can someone help me?

Hello

Lets say this is your select query in the industry,

And the other query which is actullay used to populate the edit form,

Then inside your

tag (in where you actually have the drop down box) your code should be looking like this,