Simple Popup Message Box Macro Script (error!)

[utku.demirZFGQ5]

Hello Dear All,

I'm pretty rookie about Max scripting (trying to learn) so simple I wish to script that: if object/s not selected > show message box or if something currently selected give that amounts for uvw! 

I tried as you can see here:

But I'm getting that error:

How can I solve this?

Best Regards

Here code itself:

macroScript Macro5
category:"DragAndDrop"
toolTip:""

if selection.count == 0 then messagebox "please select an object first!" title:""
else
modPanel.addModToSelection (Uvwmap ()) ui:on
$.modifiers[#UVW_Map].utile = 20
$.modifiers[#UVW_Map].vtile = 20
$.modifiers[#UVW_Map].wtile = 20

[a2d4f3s1 · Accepted solution]

In this case, you can write it like this:

macroScript Macro5
category:"DragAndDrop"
toolTip:""
(
	if selection.count == 0 then
	(
		messagebox "please select an object first!" title:""
	) else (
		modPanel.addModToSelection (Uvwmap ()) ui:on
		$.modifiers[#UVW_Map].utile = 20
		$.modifiers[#UVW_Map].vtile = 20
		$.modifiers[#UVW_Map].wtile = 20
	)
)

[utku.demirZFGQ5]

Thank you very much @a2d4f3s1, script working well now, for the sake of learning that bracket )()) logic (Syntax Definitions) I will check MaxScript Help website from Autodesk!