I'm trying to add an Episerver Forms custom validator to my project using the RegularExpressionValidatorBase

public class MyRegExValidator : RegularExpressionValidatorBase
{
    public override IValidationModel Model
    {
        get
        {
            if (this._model == null)
            {
                string str = "...some regular expression...";
                this._model = this.GetRegularExpressionValidationModel(str, str);
            }
            return this._model;
        }
    }
}

This works fine. Validator shows in the UI, so I can select it. (also added displayname and message to the language file)

However, there is no client side validation yet. How do I register my RegEx validator to also do client side validation?

It must somehow be added to the epi.Episerver.Forms.Validators list like the other validators in EPiServerForms.js

Thanks