Configure ImageBackground directly - Kodi for PC IOS Football Addons IPTV M3u Sports

Hello Everyone, I need yourhelp..
I’m trying become skinner Smile . I want to change ImageBackground using button.
So when the button is pressed, the ImageBackground will switch directly with my picture..
This is my code,,

Code:
<control type="button">

        <description>change background</description>

                       <posx>130</posx>

                <posy>250</posy>

                <width>120</width>

                <height>110</height>

                <align>center</align>

                <aligny>center</aligny>

                <texturefocus>circle_theme1.png</texturefocus>

                <texturenofocus>circle_theme2.png</texturenofocus>

                <onclick>Skin.SetImage(SKINDEFAULT2.jpg,special://skin/backgrounds/,.jpg)</onclick>

                <enable>Skin.HasSetting(UseCustomBackground)</enable>

            </control>

I’m using SetImage,but it’snot directly switch Sad

Thanks.
Best regards,
Enic