Help with Conditional logic

Hi, for a landing page where visitors can calculate the Cashback based on their amount of solar panels, I'm using Conditional Logic, but it seems to be erroneous. Can you please support?
If the amount is 4001 6001 it needs to show field 3 (750 euro)

I tried many things but it seems there's always more fields showing (even if I force 'hide field in conditional')

Thanks for helping me out ....

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