MAX IF DAX function

[Addora]

Hello there,

please I need help, as shown:

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I need to get MAX for [Avail time] col, for

 criteria. My [Code] column have a duplicated values, I need to get the MAX for Avail time but beside the code value without the duplication. 

e.g: as shown >> the code value: 4273681261 duplicated four times, I need to put the MAX [Avail time] beside one value and the other will have 0

thanks a lot.