Knockout.js/ ASP.net 验证问题

Question

I have just started working on a fairly big ASP.net / Knockout.js project. I fixed a couple of validation issues, but this one perplexing me. It is coded the same as many others. I am trying to set a minimum value of say -10 not 0. However the validation does not ripple through to the webpage - the old validation is still inplace. This is in a typescript file.

export class RIViewModel extends ViewModelBase {

    public parent: RiViewModel;

    // Model mapped properties
    public riId: number = 0;
    public rId: number = 0;
    public iiId = ko.observable<number>(0);
    //public quantity = KnockoutExtensions.numericObservable(null, { min: 10 } as NumericValidationOptions);
    public quantity = ko.observable<number>().extend(
    {
            required: true,
            validation:
            {
                message: "Please enter a quantity greated than -1000  TLW100",
                validator:
                    function (value: number  ) {
                        return value >= -100;
                    }
            }
    });

The message the user gets when they enter a negative number is still the old one (message and value) which is different from the above. I discovered the displayed error is coming from 'vendor.build' not the.ts or.js files. What is vendor.build? My google search has not yielded much yet. If anyone can help me with this I would really appreciate it as it has me stumped. I am new to knockout.js and there is no one else here to turn to... I need a guru!

Thanks in advance guys.