Warrior stance macro with rend

[thor0118]

Hy is anybody reading this ?? I need a help
I want to make a lua macro for my warrior and i want to insert som + mcro into an another one .
ma dps macro is
statattack
/run if IsUsableSpell("Victory Rush") then CastSpellByName("Victory Rush") end
/run if (GetSpellCooldown("Heroic Throw"))==0 and (IsSpellInRange('Heroic Throw','target'))==1 then CastSpellByName("Heroic Throw") end
/run local _,d,_ = GetSpellCooldown("Bloodrage") if (d == 0) then CastSpellByName("Bloodrage") end
/run b={UnitBuff("player")} if not (b[1]=="Battle Shout" or b[1]=="Blessing of Might" or b[1]=="Greater Blessing of Might") and IsUsableSpell("Battle Shout") then CastSpellByName("Battle Shout") end
/run if UnitBuff("player", "Slam!") then CastSpellByName("Slam") end
/run local _,d,_ = GetSpellCooldown("Bloodthirst") if (d == 0) then CastSpellByName("Bloodthirst") end
/run local _,a,_ = GetSpellCooldown("Whirlwind") if (a == 0) then CastSpellByName("Whirlwind") end
/run if UnitPower("Player") > 57 then CastSpellByName("Heroic Strike") end
/run local _,d,_ = GetSpellCooldown("Execute") if (d == 0) then CastSpellByName("Execute") end
/run StaticPopup_Hide("MACRO_ACTION_FORBIDDEN")


and i want to insert rend to my rota with stance swap can someone help me ??