Unable to change default value of Target Point Oject reference


i made a widget and if you click on button the player should to be transported to a target Point. I create a variable with the type of “target point object reference” but i am not able to change the default value to target point1 or target point2 etc. by the drop down menu in the details window of this variable…it says: “editing this value in a class default object is not allowed.”

In the level-blueprint ist totally easy to use target points, but in widgets?

thanks for helping me