Asp.net core 2.0 comma and point decimal separator

Hello,

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I tried to make an attempt of a basic project Core 2 with just a model:

<div>    public class Bilance 
    { 
        [Key] 
        public int Id { get; set; } 

        [Required] 
        public decimal Amount{ get; set; } // (sql 18,2) 
    }</div>

I used this Custom Model Binding to use the comma as decimal seperator but it doesn't work.

(https://stackoverflow.com/questions/39737607/aspnet-core-decimal-binding-not-working-on-non-english-culture)

Works with a few numbers (123,456) with others no (11,50... 1520,77)

Could you help me? 

Thanks

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