How to improve override / rewrite variable in XSL?

Question

I want to do the following:

• Declare a variable
• Go to the if statement
• Replace variable

XSL says I cannot declare a variable twice, so what can I do to improve this step?

Another approach was to check if the variable was set at all. I did this because I skipped the first step and declared the variable in the if-statement. In another if-statement, I wanted to check if a variable exists at all.

Answer 1

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Answer 2

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Answer 3

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