you trying to read a property from null object that will never work.
try to use a node is valid before and print string in case of false to see.
We need pics of your code to help you.
Im trying to create a feature where you can customize your character before the game itself begins. The code below is what ive setup following a tutorial on youtube. When i go into play mode nothing happens and I get the errors shown and im baffled because when i place the same code in the Third Person (The character itself) and set it to change the mesh at the start of the game it changes it, so im certain the static mesh changing code works but it doesnt when i try to change the mesh with the buttons in the hud.
Please help this was a key feature in a game i intend to create!