windows 8 - What is the merchant id? -

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i'm having issues getting paypal integrated windows 8 app. i'm not sure "merchantid" suppose be, i'm assuming terminology doesn't line on developer portal?

in code sample, execute() returns false without showing prompt:

buynow buynow = new buynow([i've tried several ids found portal]) {     usesandbox = true, };  itembuilder itembuilder = new itembuilder(this.product.name); itembuilder.description(this.product.description); itembuilder.name(this.product.name); itembuilder.price((product.saleprice ?? product.price).tostring()); itembuilder.quantity(1); itembuilder.id (this.product.id.tostring()); item item = itembuilder.build(); buynow.additem(item);  bool buynowresult = await buynow.execute();

alright, next person. 'merchantid' refers 'merchant account id' found on www.sandbox.paypal.com site under profile -> business info.

i having issues because string entering description long. sure hook error event meaningful error message. buynow object isn't populated error message despite having error property.

buynow.error += (sender, e) => {     // e has error };

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