How fix eth1 interface in easycwmp wan_script

For Developers
1

i install easycwmp in openwrt fot zbt-we826 i config easycwmp for ACS software and tcp sended to ACS but easycwmp not send WANIPConnection.1.ExternalIPAddress i search and find that i should edite wan_device script in this links : http://support.easycwmp.org/view.php?id=13http://support.easycwmp.org/view.php?id=110

i do this guids but this problem not solve this is compelete script :https://github.com/pivasoftware/easycwmp/blob/master/ext/openwrt/scripts/functions/tr098/wan_device

this code is wan ip functions that i should change

wan_device_browse_instances_wancxdev() {
    local map maps=`wan_device_get_interface_maps` 
    for map in $maps; do
        local iface=${map%%:*}
        map=${map#*:}
        local j=${map%%:*}
        map=${map#*:}
        local protocol=${map%%:*}
        local default=${map#*:}
        sub_entry_wandevice_wanconnectiondevice "$1" "$j" "$iface" "$protocol" "$default"
    done
    return 0;
}

#######################################
#   Data model parameters functions   #
#######################################

wan_device_get_interface_maps() {
    #should return a list like this: "<interface1>:<instance1>:<protocol>:<default interface? 1 : 0> <interface2>:<instance>:<protocol>:<default interface? 1 : 0>"
    echo "mng:1:IP:1 wan:2:PPP:0"
}

wan_device_get_ipcx_status() {
    echo "Connected"
}

wan_device_get_ipcx_ipaddr() {
    local val iface="$1"
    network_get_ipaddr val "$iface"
    echo "$val"
}

wan_device_get_ipcx_macaddr() {
    local val iface="$1"
    if [ -z "$default_wan_device_mng_interface_mac" ]; then
        val=`$UCI_GET network.$iface.macaddr`
    else
        val=$default_wan_device_mng_interface_mac
    fi
    echo $val
}

wan_device_get_wan_ppp_enable() {
    local iface="$1"
    local val=`$UCI_GET network.$iface.auto`
    echo ${val:-1}
}

wan_device_set_wan_ppp_enable() {
    local iface="$1"
    local val="$2"
    common_set_bool "network.$iface.auto" "$val" "1" "0"
    local e="$?"
    [ "$e" != "0" ] && return $e
    return 0
}