How to order the elements of a category in the properties panel in a custom activity

[jmurillob]

I am making a custom activity in C# and when I embed the activity in UiPath Studio the items in the Input category are sorted alphabetically.
This is my code and that’s how they look in UiPath Studio:

As you can see, “Datos Específicos” appears before “Datos Genéricos”, despite the fact that it has been declared before.

Thanks!