Bug with control undead

It doesn't take into affect that you can at higher levels control more zombies. c 'control undead' juju You are already controlling as many creatures as you can! gr Haelior's group: [ NPC ] a zombie of the tainted dwarf lord 64% hp 100% mana 100% mv 0 xp [ NPC ] a zombie of a gorgeous silver-haired elf 100% hp 100% mana 100% mv 0 xp [ NPC ] a flesh golem 100% hp 100% mana 100% mv 0 xp [ NPC ] another greater undead 100% hp 100% mana 100% mv 0 xp [40 Nec] GreaterNecro 100% hp 89% mana 68% mv 298253 xp