Aerosoft A320 Professional LVAR's/LUA

Hi All,

I have got myself a decent flight control system and am trying to assign some of the functions to the switches and rotaries. I have managed this fine with the PMDG 747 and using offsets and am trying to create a profile for the bus through FSUIPC and have created an lua file to do various functions but am a little confused with some of it. The baro increment and decrement is fine as there is some offsets in the action.lua file I got from the Linda forums over at Avsim but I am struggling to try and get other functions to work.

For example trying to map a toggle for the AP1 button and the localiser button, the Localiser button for example:-

if (ipc.readLvar("L:B_AP_LOC") == 1)then

    ipc.writeLvar("L:B_AP_LOC", 0)

    ipc.writeLvar("L:SmallOverheadPushButtons", 1)
end

Have it called APLOCAL_tgl.lua and in the sim can see the option available as an FS Control in FSUIPC, but when I assign it to a button nothing happens, is there a particular parameter I need to set, for it to function (have tried both a 0 and a 1)?

Thanks,

Graham