Why is this IF code not working.

I am looking up 3 fields from text boxes on a userform.

The user enters the following values 0 - 100,000 and 50,000

In the code it will appear like this;

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However the code does not recognise that 50,000 is smaller than 100,000 and skips that IF statement. (The text boxes have only numbers entered and then formatted to number ) If I remove the comma this issue is still there?
Is there a way around this?

If you copy this code into Excel and step through you will see my issue. Thank you

Thanks Olly That's great. I was declaring them incorrectly elsewhere in the code as a variant. It works now. Thank you