[JASS] why it returns (null)?

[Chewii]

call CreateUnit(Player(0),'hfoo',1,1,1)
set u[5] = GetLastCreatedUnit()
set s[5] = GetUnitName(u[5])
call Print(s[5])

why does this return null?

 

[Zwiebelchen]

call CreateUnit(Player(0),'hfoo',1,1,1)
set u[5] = GetLastCreatedUnit()
set s[5] = GetUnitName(u[5])
call Print(s[5])

why does this return null?

GetLastCreatedUnit() only works when using the BJ for creating a unit.

Basicly, change it to this, it should work:

set u[5] = CreateUnit(Player(0),'hfoo',1,1,1)
set s[5] = GetUnitName(u[5])
call BJDebugMsg(s[5])

 

[deathismyfriend]

you should never use GetLastCreatedUnit or any of the GetLastCreated anything in jass.
Zwiebelchen gave you the right way to do it. if u want a better explanation basically set u[5] is the value u set the returned value to. This means any function tht returns something instead of call Function() u do set variable = Function()

 

[Chewii]

Thank you both

 

[Almia]

CreateUnit is not a BJ.
Here how GetLastCreatedUnit works :

function CreateUnitAtLocSaveLast takes player id, integer unitid, location loc, real face returns unit

    if (unitid == 'ugol') then

        set bj_lastCreatedUnit = CreateBlightedGoldmine(id, GetLocationX(loc), GetLocationY(loc), face)

    else

        set bj_lastCreatedUnit = CreateUnitAtLoc(id, unitid, loc, face)

    endif



    return bj_lastCreatedUnit

endfunction



//===========================================================================

function GetLastCreatedUnit takes nothing returns unit

    return bj_lastCreatedUnit

endfunction

Source: Blizzard.J