ISN AutoIt Studio - German

I get this error when I try to syntax check:
ERROR: Dec() [built-in] called with wrong number of args.
Local $sStringDec = Dec($sHexString, 1)

But Dec() clearly has two args:
Dec ( "hex" [, flag ] ) (from helpfile)

This also occurs, if you just use this, without a var:
Dec( "0xFFFFFF", 1 )

Also, Local $ProcessedString = _CryptString($sString, InputBox("Key", "The key you want to use."), $CurrentMethod, $CurrentMode)
The $CurrentMode is included in the Local Vars Window on the right, as: $CurrentMode)
Maybe you have to update the syntax check, but I don't know.

Greets,
-Jonniy-