Passing parametrized method parameter

[opxh]

Hi, there!
Just found out the problem with limitations for generic method;
I'l describe on expample:

I'm expecting what the call of "Set" for "UIEdit" would pass correclty

// here's "Set":
public static IUIEdit<T> Set<T>(this IUIEdit<T> edit, T value)
{ }

// here's "UIEdit":
public interface IUIEdit<T> : IUIControl, IHasValue<T>
{ }

public class UIEdit<T> : UIControl, IUIEdit<T>
{ }

public class UIEdit : UIEdit<string>
{ }

But, I'm facing the problem, what actually not this "Set" mapped to it, but this:

public static T Set<T>(this T control, params string[] path) where T : IUITreeNode
{ }

"The type UIEdit canot be used as a type parameter 'T' in the generic type or method 'Set(T, params string[]). There is no implicit reference conversion from UIEdit to UITreeNode"

p.s. they are both in one namespace, but both are limited by those interfaces, why is that happening?
I mean, please, dont offer me to split namespaces.
p.s.s. and yeah, I know if I'l change the last "Set" to non-generic - it could be working great.

What can I do in this situation except the things in p.s?

[yaakov-h]

Do you have your C# language version set to 7.3, or is it lower?

[opxh]

I do, it is "C# latest major version (default)" in the select box of "Language version" in project props -> build -> advanced, and the major version in the box is "C# 7.3" and this code

typeof(string).Assembly.ImageRuntimeVersion

returned "v4.0.30319"

[Neme12]

latest major version = 7.0
latest minor version = 7.3

[opxh]

What does "major" means in this context? The greatest number of version, did I get it wrong?

[Neme12]

7 is the major version number, 3 is the minor version

[opxh]

now I've got same problem with generic UIEdit

 public static IUIEdit<T> Set<T>(this IUIEdit<T> edit, T value)
        {
            edit.Add(new SetToEditCommand(edit, value.ToString()));
            return edit;
        }

(it's ok when I'm specifyin signature by UIEdit instead of IUIEdit, but my question is still actual)