修改埋点

@@ -198,7 +198,10 @@ $('.description').on('click', function() {
 $('.use-coupon-btn').on('click', function() {
 	if (window._yas) {
 		window._yas.sendCustomInfo({
-			TO_URL: activityInfo.buttonLink
+			op : "YB_DOWNLOAD_C",
+			param : JSON.stringify({
+				TO_URL: activityInfo.buttonLink
+			})
 		}, true);
 	}
 });