Cannot get IPC.ASK to work

[Emile B. 0]

Hi Pete & John,

A Lua plug-in I set up for the A2A C172 contains the following function :
 

function C172_Door_Open_If_Closed()
    local doors
    doors = ipc.readUB(0x3367)
    if logic.And(doors,1) == 0    -- pilot door closed
    and ipc.readUB(0x0366) == 1    -- aircraft on ground
    then
        ipc.setbitsUB(0x3367, 1)
    end
--    doors = ipc.ask("Which door?\n1=Pilot\n2=Pax\n3=Both") -- 1 = pilot, 2 = passenger, 3 = both
--    if doors = 1 or doors = 2 or doors = 3 then    -- check input is valid
--        if ipc.readUB(0x0366) == 1        -- aircraft on ground
--        then
--            ipc.setbitsUB(0x3367, doors)
--        end
--    end
end

event.flag(54, "C172_Door_Open_If_Closed")

The active section works fine.  But I thought it would be handy to be able to select which door to open without having to edit the Lua script.  So I replaced the active section below the "local doors" line with the section marked as Remarks above.  Unfortunately no window to enter the door selection appears.  Debug did not show a syntax error so it must be my logic (or more likely, the lack of it).  Perhaps I cannot use a string as a mask to set a bit in offset 3367 and if so, how can I fix that ?  Can you help put me on the right track ?  Using FSUIPC 6.0.12 (registered) with P3DV4.5 HF3.  Thanks for any hints.

Regards,
Emile.

[spokes2112 31]

3 hours ago, Emile B. said:

Unfortunately no window to enter the door selection appears. 

No clue on this one. Perhaps the errors below fail the whole lua.

IIRC the ipc.ask() returns a string so you could do this 1 of 2 ways -
1) Put this line under ipc.ask() and change your comparison signs in the then following line from = to == &  you should be good the rest of the way :
doors = tonumber(doors)
-or-
2) Change the following 2 lines to first, test against a string & correct the comparison signs, and second, to convert to number for ipc.setbits
if doors == "1" or doors == "2" or doors == "3" then    -- check input is valid 
ipc.setbitsUB(0x3367, tonumber(doors))

Hope this helps,
Roman

[Emile B. 0]

20 hours ago, spokes2112 said:

1) Put this line under ipc.ask() and change your comparison signs in the then following line from = to == &  you should be good the rest of the way :
doors = tonumber(doors)

Yes, that worked a treat !  Many thanks indeed !

Regards,
Emile.