Use a [CastToNumPButton] between your [Event BeginPlay] and the [Set] node. From there, drag off the (As NumPButton Object) pin and connect it to the (Target) pin of [Set].
Use a [CastToNumPButton] between your [Event BeginPlay] and the [Set] node. From there, drag off the (As NumPButton Object) pin and connect it to the (Target) pin of [Set].