API:UnitMaxSkill

Get the maximum mana of a unit.
UnitMaxSkill("unit")
== Parameter ==
:;unit
::String - the UnitId (e.g. "target", "party1", "raid1", etc..) 
== Returns ==
:;mana 
::Integer - maximum mana/rage/etc of the secondary class of specified unit. Returns 0 if the specified unit does not exist (eg. "target" given but there is no target).
== Example ==
Print your maximum mana to the Say channel.
SendChatMessage("My mana is " .. UnitMaxSkill("player"),"SAY")
UnitMaxSkill