Kabbalah for Daniel 2:4

"And it came to pass in the morning that his spirit was troubled (Heb. וַתִּפָּעֶם)." What does וַתִּפָּעֶם mean? Rabbi Yosi said, It has already been explained. Of Pharaoh, it is written, וַתִּפָּעֶם, and of Nebuchadnezzar, it is written, "his spirit was troubled (Heb. וַתִּתְפָּעֶם)" (Daniel 2:1). Pharaoh is described as vatipaem because he comprehended the dream but not its interpretation. Nebuchadnezzar, on the other hand, saw the dream and its interpretation, but forgot everything. It is therefore written vatitpaem (with an extra Tet).