I don’t know if this will help, but your cast node is unnecessary as it looks like you’ve already established the Third Person Character in the variable “Player Reference.” Have you tried removing the cast node?
please take full screen shots of both your actor and your widget event graphs, relevant functions and variables/parameters/settings. It’s hard to give a solution when we don’t know what’s going on…
you might think current screenshots are all that we need but if that was the case you would have solved the problem yourself already.