Fieldinfo update subfield of field

See more:

C#

.NET

reflection

Good day,

I need to make function that will iterate on Dictionary that stores variable name and variable`s new value. After that, I need to update class variable with that value.

void UpdateValues(Type type, Dictionary<string, string> values)
    {
    	foreach (var value in values)
    	{
    		var fieldInfo = selected.GetComponent(type).GetType().GetField(value.Key);
    		if (fieldInfo == null) continue;
    		
    		fieldInfo.SetValue(selected.GetComponent(type), value.Value);
    	}
    }

It works but I want little improvement and I absolutely don't know if it is possible.
As you can see, that function can accept any class, not just one specific.

If I have class like this

class test
    {
    	public string age;
    }

And I would use function this way, it would work.

UpdateValues(typeof(test), new Dictionary<string, string>{{"age", "17"}});

Problem is if I have class like this and I would like to update "subfield" (field in field)

class test
    {
    	public string age;
    }
    
    class test2
    {
    	public test data;
    }

I was thinking that syntax could be something like this, but I have no idea how could I do it.

UpdateValues(typeof(test2), new Dictionary<string, string>{{"data.age", "17"}});

To sum it up, I need to make function that will take class that is stored in another class. Function will iterate trough the dictionary and update fields of class and even her subfields.

What I have tried:

I've already made working function that can edit child variable of some object.