Decimal Precision, scale

Hello 

I am using .Net Core

I want to add a property to my model 

pubic decimal ContractId {get;set;}

and create relation to Contract Table Primary Key 

so I added 

public virtual Contracts Contract {get;set;}

Because the ContractId field  Precision, Scale in the Contracts Table is (32,0) , I am getting error that the length are not same 

and it is forcing me to create it as 18,2 

I changed the size from the database and same error exist. 

I tried all the following solutions and nothing works 

https://www.andrewcbancroft.com/2017/03/29/entity-framework-tip-specifying-decimal-precision/

https://stackoverflow.com/questions/3504660/decimal-precision-and-scale-in-ef-code-first

and this 

https://github.com/CypressNorth/.NET-EF6-PrecisionAnnotation

any Idea?