still not sure what your Portal1 variable contain on screen
how did you create portal? is it staticly placed in world or spawned at runtime when you start playing?
if you placed portal staticly in world, then you don’t need a variable Portal1, because there’s little trick - open your blueprint event graph on half of left screen side and keep on right side list on world objects, then just drag and drop your static portal from world list to event graph of blueprint and you get magic reference to your static portal in world, note this node isn’t variable, only looks so and idk why in BP event graph you can’t right click and find same reference