Override built in required validator of angular 2

Question

I'm making a small web application which contains forms need input validation. Currently I'm using built-in validator such as: required, minlength, maxlength, ...

I wonder if there is any way to override them or not. I used the command below for debugging.

<span>{{findCategoryBox.controls.name.errors | json}}</span>

I received this result:

{ "required": true }

I want to override the required validator like this:

<input class="form-control"
                       placeholder="Category name"
                       formControlName="name"
                       required="CATEGORY_REQUIRED"
                       maxlength="10"
                       minlength="3"/>

And I want to receive the result like this:

{ "required": "CATEGORY_REQUIRED"}

How can I do that ?

Please help me

Thank you,