The user has pressed a preset flash whilst in the store menu. Try and record the palette to that handle
Namespace: Palette.StoreMenu
Void Palette.StoreMenu.StoreOnButton(String group, Int32 index)
http://[ip]:4430/titan/script/2/Palette/StoreMenu/StoreOnButton?group={string}&index={titanId}
group ( String ) : Button group
index ( Int32 ) : Index into that group