Then change
self.contents.draw_text(x_offset, 32, 256, 32, _HP)
self.contents.draw_text(x_offset, 64, 256, 32, _SP)
to this instead:
if [ID1, ID2, ID3].include?(enemy.id)
self.contents.draw_text(x_offset, 32, 256, 32, "???")
self.contents.draw_text(x_offset, 64, 256, 32, "???")
else
self.contents.draw_text(x_offset, 32, 256, 32, _HP)
self.contents.draw_text(x_offset, 64, 256, 32, _SP)
end
In the array [ID1, ID2, ID3] include all enemy IDs (separate them with commas) which will have ??? instead of the values.