I've shown this link to the Beholder's player but he says that the Forcecage description says "a forcecage resists dispel magic", but the Beholder's Antimagic Cone is not "Dispell Magic", so wherever the Beholder points with his Antimagic Cone, all Forcecages and Walls of Force WILL be supressed. I really don't see what's wrong with this logic ... More @Wikipedia
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