Syntax Error

try(destroydialog ::test_button)catch()
rollout test_button "TEST"
(
        -- Locals
	local h = eulerangles 180 0 0
	local usersimage
	local exportpath = @"C:\"
        -- Rollout controls
	button animateobject "Animate Object" width:130 height:20 align:#left
	button btn_browse "Select Texture"  width:130 height:20 align:#left
	button btn_aplyMat "Apply Material"  width:130 height:20 align:#left
	button exportobjects "Export Selected Objects" width:130 height:20 align:#left
	button closeinterface "Exit" width:130 height:20 align:#left
        -- Events
	on animateobject pressed do
	(
		for i=1 to 60 by 10 do
		(
			with animate on at time i (if selection.count != 0 do for o in selection do rotate o h)
		)
	)
	on btn_browse pressed do
	(
		usersimage = getOpenFileName caption: "Select Your Image" filename:maxFilepath types: "Images (*.bmp;)|*.bmp"
	)
	on btn_aplyMat pressed do
	(
		if selection.count == 0 then messageBox "Select some objects!" else
		(
			for o in selection do o.material = standardMaterial diffuseMap:(Bitmaptexture fileName:usersimage) showInViewport:true
		)
	)
	on exportobjects pressed do
	(
		if selection.count == 0 then messageBox "Select objects!" else
		(
			exportFile exportpath using:ObjExp selectedonly:on
		)
	)
	on closeinterface pressed do (destroydialog test_button)
)
createDialog test_button 160 100