NotSupportedException when setting Graphic attributes api 100 under UWP

[mh10]

We have code that was running ok under api 10.2.7

but now under api 100 we are getting

System.NotSupportedException when ever we do anything with a graphic's attributes:

var Graphic = new Graphic(Point, new List<KeyValuePair<string, object>>()

{

    new KeyValuePair<string, object>("Mode", Mode),
});

or like this:

Graphic.Attributes.Add(new KeyValuePair<string, object>("Mode", Mode));

Is there any workaround for this?

[mh10]

Hi

I think it works if we only add string attributes? In the code above Mode is an object

[dotMorten_esri]

Only simple value types are supported as attributes (ie string, integer, double, etc)