Shaman weapon imbue switching.

[Sjd6795 8]

Using the fight class creator I have a restoration shaman profile created. I am trying to figure out how to use the weapon imbues and what conditions work with them. I have flametongue and earthliving and I have health percentages set to use earthliving below 50% and flametongue above 51% but without any other conditions it just spams the ability when above 51%. I have tried setting buff condition names as the spell name, buff name, weapon name, weapon ID but it does not seem to register that it has an imbue currently on the weapon.

Would a LUA code work for identifying which imbue to use at health percentages? If so how would I go about making a LUA code for that as I have no experience with that.