Run return 0, but failed

[anonymous]

When I use a long argument(more than 120 char) for functions:
Run, RunWait etc, ExitCode off started programm always = 0, but programm not started.

An examples (ex1-work, ex2 doesnt):
ex1:
[CODE]
Set oAutoIt = WScript.CreateObject("AutoItX3.Control")
val = oAutoIt.RunWait("calc.exe anParamThatLessThan120Char", "C:\WINDOWS", oAutoIt.SW_MAXIMIZE)
' script waits until Notepad closes
WScript.Echo "Program returned with exit code:" & val
CODE
Result: Calc started

ex2:
[CODE]
Set oAutoIt = WScript.CreateObject("AutoItX3.Control")
val = oAutoIt.RunWait("calc.exe anParamThatMoreThan120CharForExample121charAndEtc_forCheckThisMakeThisStringLEnMoreThan120charsRealyMoreThan120ThankForYourSupport", "C:\WINDOWS", oAutoIt.SW_MAXIMIZE)
' script waits until Notepad closes
WScript.Echo "Program returned with exit code:" & val
CODE

Result: cals isnt started, but Msbox says that calc returns 0 as exitcode

Thanks