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<mvt:if expr="g.request EQ 'AJAX'">
<mvt:foreach iterator="group" array="basket:groups">
                <mvt:if expr="l.settings:group:line_id EQ g.lastbasketline AND l.settings:group:quantity GT g.lastqty">
                    <mvt:assign name="error" value="1" />
                </mvt:if>
</mvt:foreach>
 
<mvt:if expr="g.error">
                <div id="ERROR">
                                Please select another options than what you currently have in your basket.
                </div>
<mvt:else>
                <div id="BASK">
                Add to cart success
                </div>
</mvt:if>
<mvt:exit />
</mvt:if>