UiPath Activity Creator Issues

Help
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1

Hello everyone, i am a beginner on creating an activity package with UiPath Activity Creator.

I need help regarding :

  1. I am getting UI related issue, that the activity(Parent Scope Activity) is not visible, and getting below errors(Image 1 for : While dragging into sequence and Image 2 for : when the activity is in sequence).

Image 1 :
image

Image 2 :

image
image591×631 42.5 KB

I changed parent and child activity names according to my need in Product.Activities package(haven’t touched Designer part yet). And not getting any error while building package.
Can anybody suggest, what i am doing wrong?

  1. While debugging above parent activity, getting below error :

image

Code for ExecuteAsync method of parent scope is :

image
image810×243 21.9 KB

Below lines are generating this issue :

var property = context.DataContext.GetProperties()[RemScope.ApplicationTag];
var app = property.GetValue(context.DataContext) as RemSession;

I don’t know what i am doing wrong. Maybe the context is empty.
Please tell me where i am wrong.

  1. I have a password field and i want it to be hidden(Like a password field looks).
    I tried :
    [DataType(DataType.Password)] (with using System.ComponentModel.DataAnnotations;) and
    [PasswordPropertyText(true)]
    Both of these not worked.

How i can secure that field?

Also, i cannot find any good documentation or tutorial specific to UiPath Activity creator. Just have WPF tutorials. Apart from quick start and Anatomy of an Activty, do we have any tutorials available?