Must be constant to work?

[PantZ4 0]

I have this function;

Func _GUICreateMain($WIDTH = $GUIWIDTH[0], $HEIGHT = $GUIHEIGHT[0],$X = -1,$Y = -1)
    $GUI[0]=GUICreate($GUITITLE[0],$WIDTH,$HEIGHT,$X,$Y,$WS_POPUP,$WS_EX_TOPMOST+$WS_EX_TOOLWINDOW)
EndFunc

Now the syntax checker says;

MyScript.au3(35,30) : ERROR: syntax error

Func _GUICreateMain($WIDTH = $GUIWIDTH

~~~~~~~~~~~~~~~~~~~~~^

I can't see what is wrong. $GUIWIDTH[0] is set long before this function (value; 275), so a idea have come to my mind.

Is it only constants variables you can use or am I'm missing something here?

[Zedna 200]

Exactly as you said: it must be constant.

I discovered the same this week too in my resource UDF:

Global Const $RT_RCDATA = 10

;Func _ResourceSetImageToCtrl($CtrlId, $ResName, $ResType = $RT_RCDATA) ; syntax error
Func _ResourceSetImageToCtrl($CtrlId, $ResName, $ResType = 10) ; corrected version

Edited August 31, 2007 by Zedna

[PantZ4 0]

Damn.

Thanks Zedna .

Edited August 31, 2007 by Mr. Zero